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Finding the Fourth Proportional to 7,776.95, 10,732.42 and 4,419.90

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Solution

The fourth proportional to 7,776.95, 10,732.42 and 4,419.90 is: 6,099.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,776.95 : 10,732.42 = 4,419.90 : x
  2. Step 2: Convert to fraction form
    7,776.95/10,732.42 = 4,419.90/x
  3. Step 3: Cross multiply
    7,776.95x = 10,732.42 × 4,419.90
  4. Step 4: Simplify right side
    7,776.95x = 47,436,258.42
  5. Step 5: Solve for x
    x = 47,436,258.42/7,776.95
  6. Step 6: Final answer
    x = 6,099.60

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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.