Home / 8,685.28-11,987.22-5,150.44

Finding the Fourth Proportional to 8,685.28, 11,987.22 and 5,150.44

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Solution

The fourth proportional to 8,685.28, 11,987.22 and 5,150.44 is: 7,108.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,685.28 : 11,987.22 = 5,150.44 : x
  2. Step 2: Convert to fraction form
    8,685.28/11,987.22 = 5,150.44/x
  3. Step 3: Cross multiply
    8,685.28x = 11,987.22 × 5,150.44
  4. Step 4: Simplify right side
    8,685.28x = 61,739,457.38
  5. Step 5: Solve for x
    x = 61,739,457.38/8,685.28
  6. Step 6: Final answer
    x = 7,108.52

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Half scale
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Double scale
Find fourth proportional to 8,686.28, 11,988.60 and 5,151.44
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.