Home / 9,159.28-13,728.26-4,218.53

Finding the Fourth Proportional to 9,159.28, 13,728.26 and 4,218.53

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Solution

The fourth proportional to 9,159.28, 13,728.26 and 4,218.53 is: 6,322.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,159.28 : 13,728.26 = 4,218.53 : x
  2. Step 2: Convert to fraction form
    9,159.28/13,728.26 = 4,218.53/x
  3. Step 3: Cross multiply
    9,159.28x = 13,728.26 × 4,218.53
  4. Step 4: Simplify right side
    9,159.28x = 57,913,121.52
  5. Step 5: Solve for x
    x = 57,913,121.52/9,159.28
  6. Step 6: Final answer
    x = 6,322.89

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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.