Home / 8,891.13-12,269.74-5,115.03

Finding the Fourth Proportional to 8,891.13, 12,269.74 and 5,115.03

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Solution

The fourth proportional to 8,891.13, 12,269.74 and 5,115.03 is: 7,058.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,891.13 : 12,269.74 = 5,115.03 : x
  2. Step 2: Convert to fraction form
    8,891.13/12,269.74 = 5,115.03/x
  3. Step 3: Cross multiply
    8,891.13x = 12,269.74 × 5,115.03
  4. Step 4: Simplify right side
    8,891.13x = 62,760,088.19
  5. Step 5: Solve for x
    x = 62,760,088.19/8,891.13
  6. Step 6: Final answer
    x = 7,058.73

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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.