Home / 9,215.13-12,712.83-6,229.88

Finding the Fourth Proportional to 9,215.13, 12,712.83 and 6,229.88

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Solution

The fourth proportional to 9,215.13, 12,712.83 and 6,229.88 is: 8,594.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,215.13 : 12,712.83 = 6,229.88 : x
  2. Step 2: Convert to fraction form
    9,215.13/12,712.83 = 6,229.88/x
  3. Step 3: Cross multiply
    9,215.13x = 12,712.83 × 6,229.88
  4. Step 4: Simplify right side
    9,215.13x = 79,199,341.80
  5. Step 5: Solve for x
    x = 79,199,341.80/9,215.13
  6. Step 6: Final answer
    x = 8,594.49

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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.