Home / 9,839.10-13,578-5,362.90

Finding the Fourth Proportional to 9,839.10, 13,578 and 5,362.90

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Solution

The fourth proportional to 9,839.10, 13,578 and 5,362.90 is: 7,400.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,839.10 : 13,578 = 5,362.90 : x
  2. Step 2: Convert to fraction form
    9,839.10/13,578 = 5,362.90/x
  3. Step 3: Cross multiply
    9,839.10x = 13,578 × 5,362.90
  4. Step 4: Simplify right side
    9,839.10x = 72,817,456.20
  5. Step 5: Solve for x
    x = 72,817,456.20/9,839.10
  6. Step 6: Final answer
    x = 7,400.82

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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.