Home / 3,312.30-4,568.22-1,985.70

Finding the Fourth Proportional to 3,312.30, 4,568.22 and 1,985.70

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Solution

The fourth proportional to 3,312.30, 4,568.22 and 1,985.70 is: 2,738.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,312.30 : 4,568.22 = 1,985.70 : x
  2. Step 2: Convert to fraction form
    3,312.30/4,568.22 = 1,985.70/x
  3. Step 3: Cross multiply
    3,312.30x = 4,568.22 × 1,985.70
  4. Step 4: Simplify right side
    3,312.30x = 9,071,114.45
  5. Step 5: Solve for x
    x = 9,071,114.45/3,312.30
  6. Step 6: Final answer
    x = 2,738.61

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.