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Finding the Fourth Proportional to 7,191.45, 10,773.05 and 6,407.78

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Solution

The fourth proportional to 7,191.45, 10,773.05 and 6,407.78 is: 9,599.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,191.45 : 10,773.05 = 6,407.78 : x
  2. Step 2: Convert to fraction form
    7,191.45/10,773.05 = 6,407.78/x
  3. Step 3: Cross multiply
    7,191.45x = 10,773.05 × 6,407.78
  4. Step 4: Simplify right side
    7,191.45x = 69,031,284.47
  5. Step 5: Solve for x
    x = 69,031,284.47/7,191.45
  6. Step 6: Final answer
    x = 9,599.08

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1.5x scale

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.