Home / 6,990.72-9,647.68-4,338.24

Finding the Fourth Proportional to 6,990.72, 9,647.68 and 4,338.24

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Solution

The fourth proportional to 6,990.72, 9,647.68 and 4,338.24 is: 5,987.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,990.72 : 9,647.68 = 4,338.24 : x
  2. Step 2: Convert to fraction form
    6,990.72/9,647.68 = 4,338.24/x
  3. Step 3: Cross multiply
    6,990.72x = 9,647.68 × 4,338.24
  4. Step 4: Simplify right side
    6,990.72x = 41,853,951.28
  5. Step 5: Solve for x
    x = 41,853,951.28/6,990.72
  6. Step 6: Final answer
    x = 5,987.07

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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.