Home / 5,419-8,129.22-2,341.72

Finding the Fourth Proportional to 5,419, 8,129.22 and 2,341.72

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Solution

The fourth proportional to 5,419, 8,129.22 and 2,341.72 is: 3,512.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,419 : 8,129.22 = 2,341.72 : x
  2. Step 2: Convert to fraction form
    5,419/8,129.22 = 2,341.72/x
  3. Step 3: Cross multiply
    5,419x = 8,129.22 × 2,341.72
  4. Step 4: Simplify right side
    5,419x = 19,036,357.06
  5. Step 5: Solve for x
    x = 19,036,357.06/5,419
  6. Step 6: Final answer
    x = 3,512.89

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Double scale
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1.5x scale

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.