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Finding the Fourth Proportional to 8,065.28, 11,130.90 and 4,528.28

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Solution

The fourth proportional to 8,065.28, 11,130.90 and 4,528.28 is: 6,249.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,065.28 : 11,130.90 = 4,528.28 : x
  2. Step 2: Convert to fraction form
    8,065.28/11,130.90 = 4,528.28/x
  3. Step 3: Cross multiply
    8,065.28x = 11,130.90 × 4,528.28
  4. Step 4: Simplify right side
    8,065.28x = 50,403,831.85
  5. Step 5: Solve for x
    x = 50,403,831.85/8,065.28
  6. Step 6: Final answer
    x = 6,249.48

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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.