Home / 8,988.42-12,403.57-5,008.79

Finding the Fourth Proportional to 8,988.42, 12,403.57 and 5,008.79

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Solution

The fourth proportional to 8,988.42, 12,403.57 and 5,008.79 is: 6,911.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,988.42 : 12,403.57 = 5,008.79 : x
  2. Step 2: Convert to fraction form
    8,988.42/12,403.57 = 5,008.79/x
  3. Step 3: Cross multiply
    8,988.42x = 12,403.57 × 5,008.79
  4. Step 4: Simplify right side
    8,988.42x = 62,126,815.36
  5. Step 5: Solve for x
    x = 62,126,815.36/8,988.42
  6. Step 6: Final answer
    x = 6,911.88

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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.