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Finding the Fourth Proportional to 9,479.80, 13,084.54 and 5,655.56

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Solution

The fourth proportional to 9,479.80, 13,084.54 and 5,655.56 is: 7,806.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,479.80 : 13,084.54 = 5,655.56 : x
  2. Step 2: Convert to fraction form
    9,479.80/13,084.54 = 5,655.56/x
  3. Step 3: Cross multiply
    9,479.80x = 13,084.54 × 5,655.56
  4. Step 4: Simplify right side
    9,479.80x = 74,000,401.04
  5. Step 5: Solve for x
    x = 74,000,401.04/9,479.80
  6. Step 6: Final answer
    x = 7,806.11

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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.