Home / 8,945.36-12,343.76-5,167.92

Finding the Fourth Proportional to 8,945.36, 12,343.76 and 5,167.92

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Solution

The fourth proportional to 8,945.36, 12,343.76 and 5,167.92 is: 7,131.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,945.36 : 12,343.76 = 5,167.92 : x
  2. Step 2: Convert to fraction form
    8,945.36/12,343.76 = 5,167.92/x
  3. Step 3: Cross multiply
    8,945.36x = 12,343.76 × 5,167.92
  4. Step 4: Simplify right side
    8,945.36x = 63,791,564.18
  5. Step 5: Solve for x
    x = 63,791,564.18/8,945.36
  6. Step 6: Final answer
    x = 7,131.25

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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.