Home / 8,904.18-12,279.72-5,713.80

Finding the Fourth Proportional to 8,904.18, 12,279.72 and 5,713.80

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Solution

The fourth proportional to 8,904.18, 12,279.72 and 5,713.80 is: 7,879.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,904.18 : 12,279.72 = 5,713.80 : x
  2. Step 2: Convert to fraction form
    8,904.18/12,279.72 = 5,713.80/x
  3. Step 3: Cross multiply
    8,904.18x = 12,279.72 × 5,713.80
  4. Step 4: Simplify right side
    8,904.18x = 70,163,864.14
  5. Step 5: Solve for x
    x = 70,163,864.14/8,904.18
  6. Step 6: Final answer
    x = 7,879.88

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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.