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Finding the Fourth Proportional to 5,711.55, 7,881.11 and 3,354.45

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Solution

The fourth proportional to 5,711.55, 7,881.11 and 3,354.45 is: 4,628.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,711.55 : 7,881.11 = 3,354.45 : x
  2. Step 2: Convert to fraction form
    5,711.55/7,881.11 = 3,354.45/x
  3. Step 3: Cross multiply
    5,711.55x = 7,881.11 × 3,354.45
  4. Step 4: Simplify right side
    5,711.55x = 26,436,772.67
  5. Step 5: Solve for x
    x = 26,436,772.67/5,711.55
  6. Step 6: Final answer
    x = 4,628.65

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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.