Home / 2,487.20-3,432.32-1,368.08

Finding the Fourth Proportional to 2,487.20, 3,432.32 and 1,368.08

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Solution

The fourth proportional to 2,487.20, 3,432.32 and 1,368.08 is: 1,887.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,487.20 : 3,432.32 = 1,368.08 : x
  2. Step 2: Convert to fraction form
    2,487.20/3,432.32 = 1,368.08/x
  3. Step 3: Cross multiply
    2,487.20x = 3,432.32 × 1,368.08
  4. Step 4: Simplify right side
    2,487.20x = 4,695,688.35
  5. Step 5: Solve for x
    x = 4,695,688.35/2,487.20
  6. Step 6: Final answer
    x = 1,887.94

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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.