Home / 5,132.88-7,688.12-3,178.96

Finding the Fourth Proportional to 5,132.88, 7,688.12 and 3,178.96

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Solution

The fourth proportional to 5,132.88, 7,688.12 and 3,178.96 is: 4,761.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,132.88 : 7,688.12 = 3,178.96 : x
  2. Step 2: Convert to fraction form
    5,132.88/7,688.12 = 3,178.96/x
  3. Step 3: Cross multiply
    5,132.88x = 7,688.12 × 3,178.96
  4. Step 4: Simplify right side
    5,132.88x = 24,440,225.96
  5. Step 5: Solve for x
    x = 24,440,225.96/5,132.88
  6. Step 6: Final answer
    x = 4,761.50

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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.