Home / 8,897.26-12,279.45-5,120.36

Finding the Fourth Proportional to 8,897.26, 12,279.45 and 5,120.36

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Solution

The fourth proportional to 8,897.26, 12,279.45 and 5,120.36 is: 7,066.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,897.26 : 12,279.45 = 5,120.36 : x
  2. Step 2: Convert to fraction form
    8,897.26/12,279.45 = 5,120.36/x
  3. Step 3: Cross multiply
    8,897.26x = 12,279.45 × 5,120.36
  4. Step 4: Simplify right side
    8,897.26x = 62,875,179.00
  5. Step 5: Solve for x
    x = 62,875,179.00/8,897.26
  6. Step 6: Final answer
    x = 7,066.80

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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.