Home / 8,218.28-11,339.66-4,681.42

Finding the Fourth Proportional to 8,218.28, 11,339.66 and 4,681.42

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Solution

The fourth proportional to 8,218.28, 11,339.66 and 4,681.42 is: 6,459.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,218.28 : 11,339.66 = 4,681.42 : x
  2. Step 2: Convert to fraction form
    8,218.28/11,339.66 = 4,681.42/x
  3. Step 3: Cross multiply
    8,218.28x = 11,339.66 × 4,681.42
  4. Step 4: Simplify right side
    8,218.28x = 53,085,694.47
  5. Step 5: Solve for x
    x = 53,085,694.47/8,218.28
  6. Step 6: Final answer
    x = 6,459.46

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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.