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Finding the Fourth Proportional to 5,132.80, 7,684.80 and 4,614.40

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Solution

The fourth proportional to 5,132.80, 7,684.80 and 4,614.40 is: 6,908.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,132.80 : 7,684.80 = 4,614.40 : x
  2. Step 2: Convert to fraction form
    5,132.80/7,684.80 = 4,614.40/x
  3. Step 3: Cross multiply
    5,132.80x = 7,684.80 × 4,614.40
  4. Step 4: Simplify right side
    5,132.80x = 35,460,741.12
  5. Step 5: Solve for x
    x = 35,460,741.12/5,132.80
  6. Step 6: Final answer
    x = 6,908.65

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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.