Home / 8,210.42-11,331.12-6,714.20

Finding the Fourth Proportional to 8,210.42, 11,331.12 and 6,714.20

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Solution

The fourth proportional to 8,210.42, 11,331.12 and 6,714.20 is: 9,266.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,210.42 : 11,331.12 = 6,714.20 : x
  2. Step 2: Convert to fraction form
    8,210.42/11,331.12 = 6,714.20/x
  3. Step 3: Cross multiply
    8,210.42x = 11,331.12 × 6,714.20
  4. Step 4: Simplify right side
    8,210.42x = 76,079,405.90
  5. Step 5: Solve for x
    x = 76,079,405.90/8,210.42
  6. Step 6: Final answer
    x = 9,266.20

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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.