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Finding the Fourth Proportional to 7,681.97, 10,601.92 and 4,699.79

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Solution

The fourth proportional to 7,681.97, 10,601.92 and 4,699.79 is: 6,486.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,681.97 : 10,601.92 = 4,699.79 : x
  2. Step 2: Convert to fraction form
    7,681.97/10,601.92 = 4,699.79/x
  3. Step 3: Cross multiply
    7,681.97x = 10,601.92 × 4,699.79
  4. Step 4: Simplify right side
    7,681.97x = 49,826,801.29
  5. Step 5: Solve for x
    x = 49,826,801.29/7,681.97
  6. Step 6: Final answer
    x = 6,486.20

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1.5x scale

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.