Home / 7,331.72-10,991.40-4,985.15

Finding the Fourth Proportional to 7,331.72, 10,991.40 and 4,985.15

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Solution

The fourth proportional to 7,331.72, 10,991.40 and 4,985.15 is: 7,473.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,331.72 : 10,991.40 = 4,985.15 : x
  2. Step 2: Convert to fraction form
    7,331.72/10,991.40 = 4,985.15/x
  3. Step 3: Cross multiply
    7,331.72x = 10,991.40 × 4,985.15
  4. Step 4: Simplify right side
    7,331.72x = 54,793,704.06
  5. Step 5: Solve for x
    x = 54,793,704.06/7,331.72
  6. Step 6: Final answer
    x = 7,473.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.