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Finding the Fourth Proportional to 6,990.59, 9,653.17 and 4,757.80

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Solution

The fourth proportional to 6,990.59, 9,653.17 and 4,757.80 is: 6,569.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,990.59 : 9,653.17 = 4,757.80 : x
  2. Step 2: Convert to fraction form
    6,990.59/9,653.17 = 4,757.80/x
  3. Step 3: Cross multiply
    6,990.59x = 9,653.17 × 4,757.80
  4. Step 4: Simplify right side
    6,990.59x = 45,927,780.17
  5. Step 5: Solve for x
    x = 45,927,780.17/6,990.59
  6. Step 6: Final answer
    x = 6,569.95

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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.