Home / 7,982.15-11,013.80-5,148.97

Finding the Fourth Proportional to 7,982.15, 11,013.80 and 5,148.97

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Solution

The fourth proportional to 7,982.15, 11,013.80 and 5,148.97 is: 7,104.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,982.15 : 11,013.80 = 5,148.97 : x
  2. Step 2: Convert to fraction form
    7,982.15/11,013.80 = 5,148.97/x
  3. Step 3: Cross multiply
    7,982.15x = 11,013.80 × 5,148.97
  4. Step 4: Simplify right side
    7,982.15x = 56,709,672.51
  5. Step 5: Solve for x
    x = 56,709,672.51/7,982.15
  6. Step 6: Final answer
    x = 7,104.57

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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.