Home / 9,867.89-13,617.45-5,391.65

Finding the Fourth Proportional to 9,867.89, 13,617.45 and 5,391.65

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Solution

The fourth proportional to 9,867.89, 13,617.45 and 5,391.65 is: 7,440.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,867.89 : 13,617.45 = 5,391.65 : x
  2. Step 2: Convert to fraction form
    9,867.89/13,617.45 = 5,391.65/x
  3. Step 3: Cross multiply
    9,867.89x = 13,617.45 × 5,391.65
  4. Step 4: Simplify right side
    9,867.89x = 73,420,456.21
  5. Step 5: Solve for x
    x = 73,420,456.21/9,867.89
  6. Step 6: Final answer
    x = 7,440.34

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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.