Home / 8,139.17-12,213.62-5,669.08

Finding the Fourth Proportional to 8,139.17, 12,213.62 and 5,669.08

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Solution

The fourth proportional to 8,139.17, 12,213.62 and 5,669.08 is: 8,507.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,139.17 : 12,213.62 = 5,669.08 : x
  2. Step 2: Convert to fraction form
    8,139.17/12,213.62 = 5,669.08/x
  3. Step 3: Cross multiply
    8,139.17x = 12,213.62 × 5,669.08
  4. Step 4: Simplify right side
    8,139.17x = 69,239,899.46
  5. Step 5: Solve for x
    x = 69,239,899.46/8,139.17
  6. Step 6: Final answer
    x = 8,507.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.