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Finding the Fourth Proportional to 2,528.19, 3,792.28 and 885.20

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Solution

The fourth proportional to 2,528.19, 3,792.28 and 885.20 is: 1,327.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,528.19 : 3,792.28 = 885.20 : x
  2. Step 2: Convert to fraction form
    2,528.19/3,792.28 = 885.20/x
  3. Step 3: Cross multiply
    2,528.19x = 3,792.28 × 885.20
  4. Step 4: Simplify right side
    2,528.19x = 3,356,939.98
  5. Step 5: Solve for x
    x = 3,356,939.98/2,528.19
  6. Step 6: Final answer
    x = 1,327.81

Related Problems

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Half scale
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Double scale
Find fourth proportional to 2,529.19, 3,793.78 and 886.20
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.