Home / 7,979.24-10,987.31-7,511.66

Finding the Fourth Proportional to 7,979.24, 10,987.31 and 7,511.66

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Solution

The fourth proportional to 7,979.24, 10,987.31 and 7,511.66 is: 10,343.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,979.24 : 10,987.31 = 7,511.66 : x
  2. Step 2: Convert to fraction form
    7,979.24/10,987.31 = 7,511.66/x
  3. Step 3: Cross multiply
    7,979.24x = 10,987.31 × 7,511.66
  4. Step 4: Simplify right side
    7,979.24x = 82,532,899.48
  5. Step 5: Solve for x
    x = 82,532,899.48/7,979.24
  6. Step 6: Final answer
    x = 10,343.45

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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.