Home / 5,538.38-7,643.03-3,180.74

Finding the Fourth Proportional to 5,538.38, 7,643.03 and 3,180.74

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Solution

The fourth proportional to 5,538.38, 7,643.03 and 3,180.74 is: 4,389.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,538.38 : 7,643.03 = 3,180.74 : x
  2. Step 2: Convert to fraction form
    5,538.38/7,643.03 = 3,180.74/x
  3. Step 3: Cross multiply
    5,538.38x = 7,643.03 × 3,180.74
  4. Step 4: Simplify right side
    5,538.38x = 24,310,437.12
  5. Step 5: Solve for x
    x = 24,310,437.12/5,538.38
  6. Step 6: Final answer
    x = 4,389.45

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Half scale
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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.