Home / 2,487.20-3,730.64-1,025.92

Finding the Fourth Proportional to 2,487.20, 3,730.64 and 1,025.92

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Solution

The fourth proportional to 2,487.20, 3,730.64 and 1,025.92 is: 1,538.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,487.20 : 3,730.64 = 1,025.92 : x
  2. Step 2: Convert to fraction form
    2,487.20/3,730.64 = 1,025.92/x
  3. Step 3: Cross multiply
    2,487.20x = 3,730.64 × 1,025.92
  4. Step 4: Simplify right side
    2,487.20x = 3,827,338.19
  5. Step 5: Solve for x
    x = 3,827,338.19/2,487.20
  6. Step 6: Final answer
    x = 1,538.81

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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.