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Finding the Fourth Proportional to 8,888.80, 12,267.48 and 5,112.13

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Solution

The fourth proportional to 8,888.80, 12,267.48 and 5,112.13 is: 7,055.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,888.80 : 12,267.48 = 5,112.13 : x
  2. Step 2: Convert to fraction form
    8,888.80/12,267.48 = 5,112.13/x
  3. Step 3: Cross multiply
    8,888.80x = 12,267.48 × 5,112.13
  4. Step 4: Simplify right side
    8,888.80x = 62,712,891.20
  5. Step 5: Solve for x
    x = 62,712,891.20/8,888.80
  6. Step 6: Final answer
    x = 7,055.27

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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.