Home / 9,237.60-12,728.88-7,135.20

Finding the Fourth Proportional to 9,237.60, 12,728.88 and 7,135.20

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Solution

The fourth proportional to 9,237.60, 12,728.88 and 7,135.20 is: 9,831.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,237.60 : 12,728.88 = 7,135.20 : x
  2. Step 2: Convert to fraction form
    9,237.60/12,728.88 = 7,135.20/x
  3. Step 3: Cross multiply
    9,237.60x = 12,728.88 × 7,135.20
  4. Step 4: Simplify right side
    9,237.60x = 90,823,104.58
  5. Step 5: Solve for x
    x = 90,823,104.58/9,237.60
  6. Step 6: Final answer
    x = 9,831.89

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Half scale
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Double scale
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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.