Home / 9,170.70-12,655.55-5,191.58

Finding the Fourth Proportional to 9,170.70, 12,655.55 and 5,191.58

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Solution

The fourth proportional to 9,170.70, 12,655.55 and 5,191.58 is: 7,164.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,170.70 : 12,655.55 = 5,191.58 : x
  2. Step 2: Convert to fraction form
    9,170.70/12,655.55 = 5,191.58/x
  3. Step 3: Cross multiply
    9,170.70x = 12,655.55 × 5,191.58
  4. Step 4: Simplify right side
    9,170.70x = 65,702,211.03
  5. Step 5: Solve for x
    x = 65,702,211.03/9,170.70
  6. Step 6: Final answer
    x = 7,164.36

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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.