Home / 7,980.38-11,012.91-4,443.56

Finding the Fourth Proportional to 7,980.38, 11,012.91 and 4,443.56

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Solution

The fourth proportional to 7,980.38, 11,012.91 and 4,443.56 is: 6,132.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,980.38 : 11,012.91 = 4,443.56 : x
  2. Step 2: Convert to fraction form
    7,980.38/11,012.91 = 4,443.56/x
  3. Step 3: Cross multiply
    7,980.38x = 11,012.91 × 4,443.56
  4. Step 4: Simplify right side
    7,980.38x = 48,936,526.36
  5. Step 5: Solve for x
    x = 48,936,526.36/7,980.38
  6. Step 6: Final answer
    x = 6,132.10

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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.