Home / 9,154.18-12,630.45-5,175.21

Finding the Fourth Proportional to 9,154.18, 12,630.45 and 5,175.21

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Solution

The fourth proportional to 9,154.18, 12,630.45 and 5,175.21 is: 7,140.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,154.18 : 12,630.45 = 5,175.21 : x
  2. Step 2: Convert to fraction form
    9,154.18/12,630.45 = 5,175.21/x
  3. Step 3: Cross multiply
    9,154.18x = 12,630.45 × 5,175.21
  4. Step 4: Simplify right side
    9,154.18x = 65,365,231.14
  5. Step 5: Solve for x
    x = 65,365,231.14/9,154.18
  6. Step 6: Final answer
    x = 7,140.48

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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.