Home / 9,170.55-12,655.49-5,191.58

Finding the Fourth Proportional to 9,170.55, 12,655.49 and 5,191.58

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Solution

The fourth proportional to 9,170.55, 12,655.49 and 5,191.58 is: 7,164.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,170.55 : 12,655.49 = 5,191.58 : x
  2. Step 2: Convert to fraction form
    9,170.55/12,655.49 = 5,191.58/x
  3. Step 3: Cross multiply
    9,170.55x = 12,655.49 × 5,191.58
  4. Step 4: Simplify right side
    9,170.55x = 65,701,899.54
  5. Step 5: Solve for x
    x = 65,701,899.54/9,170.55
  6. Step 6: Final answer
    x = 7,164.44

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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.