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Finding the Fourth Proportional to 3,502.16, 5,253.24 and 905

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Solution

The fourth proportional to 3,502.16, 5,253.24 and 905 is: 1,357.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,502.16 : 5,253.24 = 905 : x
  2. Step 2: Convert to fraction form
    3,502.16/5,253.24 = 905/x
  3. Step 3: Cross multiply
    3,502.16x = 5,253.24 × 905
  4. Step 4: Simplify right side
    3,502.16x = 4,754,182.20
  5. Step 5: Solve for x
    x = 4,754,182.20/3,502.16
  6. Step 6: Final answer
    x = 1,357.50

Related Problems

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Double scale
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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.