Home / 8,143.59-11,238.93-5,119.20

Finding the Fourth Proportional to 8,143.59, 11,238.93 and 5,119.20

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Solution

The fourth proportional to 8,143.59, 11,238.93 and 5,119.20 is: 7,064.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,143.59 : 11,238.93 = 5,119.20 : x
  2. Step 2: Convert to fraction form
    8,143.59/11,238.93 = 5,119.20/x
  3. Step 3: Cross multiply
    8,143.59x = 11,238.93 × 5,119.20
  4. Step 4: Simplify right side
    8,143.59x = 57,534,330.46
  5. Step 5: Solve for x
    x = 57,534,330.46/8,143.59
  6. Step 6: Final answer
    x = 7,064.98

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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.