Home / 2,572.10-3,858.15-928.70

Finding the Fourth Proportional to 2,572.10, 3,858.15 and 928.70

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Solution

The fourth proportional to 2,572.10, 3,858.15 and 928.70 is: 1,393.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,572.10 : 3,858.15 = 928.70 : x
  2. Step 2: Convert to fraction form
    2,572.10/3,858.15 = 928.70/x
  3. Step 3: Cross multiply
    2,572.10x = 3,858.15 × 928.70
  4. Step 4: Simplify right side
    2,572.10x = 3,583,063.91
  5. Step 5: Solve for x
    x = 3,583,063.91/2,572.10
  6. Step 6: Final answer
    x = 1,393.05

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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.