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Finding the Fourth Proportional to 7,178.71, 10,770.15 and 4,407.16

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Solution

The fourth proportional to 7,178.71, 10,770.15 and 4,407.16 is: 6,612.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,178.71 : 10,770.15 = 4,407.16 : x
  2. Step 2: Convert to fraction form
    7,178.71/10,770.15 = 4,407.16/x
  3. Step 3: Cross multiply
    7,178.71x = 10,770.15 × 4,407.16
  4. Step 4: Simplify right side
    7,178.71x = 47,465,774.27
  5. Step 5: Solve for x
    x = 47,465,774.27/7,178.71
  6. Step 6: Final answer
    x = 6,612.02

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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.