Home / 2,487.47-3,432.02-1,603.79

Finding the Fourth Proportional to 2,487.47, 3,432.02 and 1,603.79

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Solution

The fourth proportional to 2,487.47, 3,432.02 and 1,603.79 is: 2,212.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,487.47 : 3,432.02 = 1,603.79 : x
  2. Step 2: Convert to fraction form
    2,487.47/3,432.02 = 1,603.79/x
  3. Step 3: Cross multiply
    2,487.47x = 3,432.02 × 1,603.79
  4. Step 4: Simplify right side
    2,487.47x = 5,504,239.92
  5. Step 5: Solve for x
    x = 5,504,239.92/2,487.47
  6. Step 6: Final answer
    x = 2,212.78

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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.