Home / 8,113.09-12,139.26-5,778.49

Finding the Fourth Proportional to 8,113.09, 12,139.26 and 5,778.49

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Solution

The fourth proportional to 8,113.09, 12,139.26 and 5,778.49 is: 8,646.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,113.09 : 12,139.26 = 5,778.49 : x
  2. Step 2: Convert to fraction form
    8,113.09/12,139.26 = 5,778.49/x
  3. Step 3: Cross multiply
    8,113.09x = 12,139.26 × 5,778.49
  4. Step 4: Simplify right side
    8,113.09x = 70,146,592.52
  5. Step 5: Solve for x
    x = 70,146,592.52/8,113.09
  6. Step 6: Final answer
    x = 8,646.10

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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.