Home / 9,867.95-13,617.82-5,391.78

Finding the Fourth Proportional to 9,867.95, 13,617.82 and 5,391.78

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Solution

The fourth proportional to 9,867.95, 13,617.82 and 5,391.78 is: 7,440.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,867.95 : 13,617.82 = 5,391.78 : x
  2. Step 2: Convert to fraction form
    9,867.95/13,617.82 = 5,391.78/x
  3. Step 3: Cross multiply
    9,867.95x = 13,617.82 × 5,391.78
  4. Step 4: Simplify right side
    9,867.95x = 73,424,289.52
  5. Step 5: Solve for x
    x = 73,424,289.52/9,867.95
  6. Step 6: Final answer
    x = 7,440.68

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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.