Home / 5,349.39-7,381.58-3,111.72

Finding the Fourth Proportional to 5,349.39, 7,381.58 and 3,111.72

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Solution

The fourth proportional to 5,349.39, 7,381.58 and 3,111.72 is: 4,293.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,349.39 : 7,381.58 = 3,111.72 : x
  2. Step 2: Convert to fraction form
    5,349.39/7,381.58 = 3,111.72/x
  3. Step 3: Cross multiply
    5,349.39x = 7,381.58 × 3,111.72
  4. Step 4: Simplify right side
    5,349.39x = 22,969,384.38
  5. Step 5: Solve for x
    x = 22,969,384.38/5,349.39
  6. Step 6: Final answer
    x = 4,293.83

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Double 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.