Home / 8,131.96-11,222.20-4,547.28

Finding the Fourth Proportional to 8,131.96, 11,222.20 and 4,547.28

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Solution

The fourth proportional to 8,131.96, 11,222.20 and 4,547.28 is: 6,275.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,131.96 : 11,222.20 = 4,547.28 : x
  2. Step 2: Convert to fraction form
    8,131.96/11,222.20 = 4,547.28/x
  3. Step 3: Cross multiply
    8,131.96x = 11,222.20 × 4,547.28
  4. Step 4: Simplify right side
    8,131.96x = 51,030,485.62
  5. Step 5: Solve for x
    x = 51,030,485.62/8,131.96
  6. Step 6: Final answer
    x = 6,275.30

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Half 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.