Home / 8,981.76-12,396.36-5,204.28

Finding the Fourth Proportional to 8,981.76, 12,396.36 and 5,204.28

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Solution

The fourth proportional to 8,981.76, 12,396.36 and 5,204.28 is: 7,182.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,981.76 : 12,396.36 = 5,204.28 : x
  2. Step 2: Convert to fraction form
    8,981.76/12,396.36 = 5,204.28/x
  3. Step 3: Cross multiply
    8,981.76x = 12,396.36 × 5,204.28
  4. Step 4: Simplify right side
    8,981.76x = 64,514,128.42
  5. Step 5: Solve for x
    x = 64,514,128.42/8,981.76
  6. Step 6: Final answer
    x = 7,182.79

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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.