Home / 2,572.18-3,856.20-927.70

Finding the Fourth Proportional to 2,572.18, 3,856.20 and 927.70

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Solution

The fourth proportional to 2,572.18, 3,856.20 and 927.70 is: 1,390.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,572.18 : 3,856.20 = 927.70 : x
  2. Step 2: Convert to fraction form
    2,572.18/3,856.20 = 927.70/x
  3. Step 3: Cross multiply
    2,572.18x = 3,856.20 × 927.70
  4. Step 4: Simplify right side
    2,572.18x = 3,577,396.74
  5. Step 5: Solve for x
    x = 3,577,396.74/2,572.18
  6. Step 6: Final answer
    x = 1,390.80

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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.