Home / 9,270.32-12,781.56-6,121.52

Finding the Fourth Proportional to 9,270.32, 12,781.56 and 6,121.52

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Solution

The fourth proportional to 9,270.32, 12,781.56 and 6,121.52 is: 8,440.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,270.32 : 12,781.56 = 6,121.52 : x
  2. Step 2: Convert to fraction form
    9,270.32/12,781.56 = 6,121.52/x
  3. Step 3: Cross multiply
    9,270.32x = 12,781.56 × 6,121.52
  4. Step 4: Simplify right side
    9,270.32x = 78,242,575.17
  5. Step 5: Solve for x
    x = 78,242,575.17/9,270.32
  6. Step 6: Final answer
    x = 8,440.12

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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.