Home / 9,868.12-13,617.56-5,391.64

Finding the Fourth Proportional to 9,868.12, 13,617.56 and 5,391.64

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Solution

The fourth proportional to 9,868.12, 13,617.56 and 5,391.64 is: 7,440.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,868.12 : 13,617.56 = 5,391.64 : x
  2. Step 2: Convert to fraction form
    9,868.12/13,617.56 = 5,391.64/x
  3. Step 3: Cross multiply
    9,868.12x = 13,617.56 × 5,391.64
  4. Step 4: Simplify right side
    9,868.12x = 73,420,981.20
  5. Step 5: Solve for x
    x = 73,420,981.20/9,868.12
  6. Step 6: Final answer
    x = 7,440.22

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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.