Home / 8,782.17-12,119.40-6,131.12

Finding the Fourth Proportional to 8,782.17, 12,119.40 and 6,131.12

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Solution

The fourth proportional to 8,782.17, 12,119.40 and 6,131.12 is: 8,460.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,782.17 : 12,119.40 = 6,131.12 : x
  2. Step 2: Convert to fraction form
    8,782.17/12,119.40 = 6,131.12/x
  3. Step 3: Cross multiply
    8,782.17x = 12,119.40 × 6,131.12
  4. Step 4: Simplify right side
    8,782.17x = 74,305,451.97
  5. Step 5: Solve for x
    x = 74,305,451.97/8,782.17
  6. Step 6: Final answer
    x = 8,460.94

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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.