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Finding the Fourth Proportional to 9,761.80, 14,645.02 and 3,187.99

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Solution

The fourth proportional to 9,761.80, 14,645.02 and 3,187.99 is: 4,782.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,761.80 : 14,645.02 = 3,187.99 : x
  2. Step 2: Convert to fraction form
    9,761.80/14,645.02 = 3,187.99/x
  3. Step 3: Cross multiply
    9,761.80x = 14,645.02 × 3,187.99
  4. Step 4: Simplify right side
    9,761.80x = 46,688,177.31
  5. Step 5: Solve for x
    x = 46,688,177.31/9,761.80
  6. Step 6: Final answer
    x = 4,782.74

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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.