Home / 4,761.17-7,140.67-1,987.89

Finding the Fourth Proportional to 4,761.17, 7,140.67 and 1,987.89

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Solution

The fourth proportional to 4,761.17, 7,140.67 and 1,987.89 is: 2,981.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,761.17 : 7,140.67 = 1,987.89 : x
  2. Step 2: Convert to fraction form
    4,761.17/7,140.67 = 1,987.89/x
  3. Step 3: Cross multiply
    4,761.17x = 7,140.67 × 1,987.89
  4. Step 4: Simplify right side
    4,761.17x = 14,194,877.70
  5. Step 5: Solve for x
    x = 14,194,877.70/4,761.17
  6. Step 6: Final answer
    x = 2,981.39

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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.