Home / 8,755.43-12,080.35-5,615.87

Finding the Fourth Proportional to 8,755.43, 12,080.35 and 5,615.87

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Solution

The fourth proportional to 8,755.43, 12,080.35 and 5,615.87 is: 7,748.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,755.43 : 12,080.35 = 5,615.87 : x
  2. Step 2: Convert to fraction form
    8,755.43/12,080.35 = 5,615.87/x
  3. Step 3: Cross multiply
    8,755.43x = 12,080.35 × 5,615.87
  4. Step 4: Simplify right side
    8,755.43x = 67,841,675.15
  5. Step 5: Solve for x
    x = 67,841,675.15/8,755.43
  6. Step 6: Final answer
    x = 7,748.53

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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.