Home / 8,705.97-12,014.69-5,121.11

Finding the Fourth Proportional to 8,705.97, 12,014.69 and 5,121.11

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Solution

The fourth proportional to 8,705.97, 12,014.69 and 5,121.11 is: 7,067.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,705.97 : 12,014.69 = 5,121.11 : x
  2. Step 2: Convert to fraction form
    8,705.97/12,014.69 = 5,121.11/x
  3. Step 3: Cross multiply
    8,705.97x = 12,014.69 × 5,121.11
  4. Step 4: Simplify right side
    8,705.97x = 61,528,549.11
  5. Step 5: Solve for x
    x = 61,528,549.11/8,705.97
  6. Step 6: Final answer
    x = 7,067.40

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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.