Home / 8,078.76-11,154.96-6,307.26

Finding the Fourth Proportional to 8,078.76, 11,154.96 and 6,307.26

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Solution

The fourth proportional to 8,078.76, 11,154.96 and 6,307.26 is: 8,708.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,078.76 : 11,154.96 = 6,307.26 : x
  2. Step 2: Convert to fraction form
    8,078.76/11,154.96 = 6,307.26/x
  3. Step 3: Cross multiply
    8,078.76x = 11,154.96 × 6,307.26
  4. Step 4: Simplify right side
    8,078.76x = 70,357,233.01
  5. Step 5: Solve for x
    x = 70,357,233.01/8,078.76
  6. Step 6: Final answer
    x = 8,708.91

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Half scale
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Double scale
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Similar ratio
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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.