Home / 8,630.42-11,911.26-5,275.20

Finding the Fourth Proportional to 8,630.42, 11,911.26 and 5,275.20

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Solution

The fourth proportional to 8,630.42, 11,911.26 and 5,275.20 is: 7,280.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,630.42 : 11,911.26 = 5,275.20 : x
  2. Step 2: Convert to fraction form
    8,630.42/11,911.26 = 5,275.20/x
  3. Step 3: Cross multiply
    8,630.42x = 11,911.26 × 5,275.20
  4. Step 4: Simplify right side
    8,630.42x = 62,834,278.75
  5. Step 5: Solve for x
    x = 62,834,278.75/8,630.42
  6. Step 6: Final answer
    x = 7,280.56

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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.