Home / 8,131.40-11,220.72-5,482.38

Finding the Fourth Proportional to 8,131.40, 11,220.72 and 5,482.38

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Solution

The fourth proportional to 8,131.40, 11,220.72 and 5,482.38 is: 7,565.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,131.40 : 11,220.72 = 5,482.38 : x
  2. Step 2: Convert to fraction form
    8,131.40/11,220.72 = 5,482.38/x
  3. Step 3: Cross multiply
    8,131.40x = 11,220.72 × 5,482.38
  4. Step 4: Simplify right side
    8,131.40x = 61,516,250.91
  5. Step 5: Solve for x
    x = 61,516,250.91/8,131.40
  6. Step 6: Final answer
    x = 7,565.27

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Half 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.