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Finding the Fourth Proportional to 7,747.56, 10,689.03 and 4,390.11

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Solution

The fourth proportional to 7,747.56, 10,689.03 and 4,390.11 is: 6,056.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,747.56 : 10,689.03 = 4,390.11 : x
  2. Step 2: Convert to fraction form
    7,747.56/10,689.03 = 4,390.11/x
  3. Step 3: Cross multiply
    7,747.56x = 10,689.03 × 4,390.11
  4. Step 4: Simplify right side
    7,747.56x = 46,926,017.49
  5. Step 5: Solve for x
    x = 46,926,017.49/7,747.56
  6. Step 6: Final answer
    x = 6,056.88

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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.