Home / 8,478.52-11,699.94-5,121.16

Finding the Fourth Proportional to 8,478.52, 11,699.94 and 5,121.16

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Solution

The fourth proportional to 8,478.52, 11,699.94 and 5,121.16 is: 7,066.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,478.52 : 11,699.94 = 5,121.16 : x
  2. Step 2: Convert to fraction form
    8,478.52/11,699.94 = 5,121.16/x
  3. Step 3: Cross multiply
    8,478.52x = 11,699.94 × 5,121.16
  4. Step 4: Simplify right side
    8,478.52x = 59,917,264.73
  5. Step 5: Solve for x
    x = 59,917,264.73/8,478.52
  6. Step 6: Final answer
    x = 7,066.95

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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.