Home / 9,377.54-12,941.28-5,128.85

Finding the Fourth Proportional to 9,377.54, 12,941.28 and 5,128.85

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Solution

The fourth proportional to 9,377.54, 12,941.28 and 5,128.85 is: 7,077.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,377.54 : 12,941.28 = 5,128.85 : x
  2. Step 2: Convert to fraction form
    9,377.54/12,941.28 = 5,128.85/x
  3. Step 3: Cross multiply
    9,377.54x = 12,941.28 × 5,128.85
  4. Step 4: Simplify right side
    9,377.54x = 66,373,883.93
  5. Step 5: Solve for x
    x = 66,373,883.93/9,377.54
  6. Step 6: Final answer
    x = 7,077.96

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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.