Home / 8,765.15-13,139.22-3,498.64

Finding the Fourth Proportional to 8,765.15, 13,139.22 and 3,498.64

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Solution

The fourth proportional to 8,765.15, 13,139.22 and 3,498.64 is: 5,244.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,765.15 : 13,139.22 = 3,498.64 : x
  2. Step 2: Convert to fraction form
    8,765.15/13,139.22 = 3,498.64/x
  3. Step 3: Cross multiply
    8,765.15x = 13,139.22 × 3,498.64
  4. Step 4: Simplify right side
    8,765.15x = 45,969,400.66
  5. Step 5: Solve for x
    x = 45,969,400.66/8,765.15
  6. Step 6: Final answer
    x = 5,244.57

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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.