Home / 7,964.15-10,987.46-5,131.29

Finding the Fourth Proportional to 7,964.15, 10,987.46 and 5,131.29

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Solution

The fourth proportional to 7,964.15, 10,987.46 and 5,131.29 is: 7,079.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,964.15 : 10,987.46 = 5,131.29 : x
  2. Step 2: Convert to fraction form
    7,964.15/10,987.46 = 5,131.29/x
  3. Step 3: Cross multiply
    7,964.15x = 10,987.46 × 5,131.29
  4. Step 4: Simplify right side
    7,964.15x = 56,379,817.97
  5. Step 5: Solve for x
    x = 56,379,817.97/7,964.15
  6. Step 6: Final answer
    x = 7,079.21

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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.