Home / 1,487.70-2,231.19-500.49

Finding the Fourth Proportional to 1,487.70, 2,231.19 and 500.49

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Solution

The fourth proportional to 1,487.70, 2,231.19 and 500.49 is: 750.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,487.70 : 2,231.19 = 500.49 : x
  2. Step 2: Convert to fraction form
    1,487.70/2,231.19 = 500.49/x
  3. Step 3: Cross multiply
    1,487.70x = 2,231.19 × 500.49
  4. Step 4: Simplify right side
    1,487.70x = 1,116,688.28
  5. Step 5: Solve for x
    x = 1,116,688.28/1,487.70
  6. Step 6: Final answer
    x = 750.61

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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.