Home / 9,863.79-13,611.84-5,387.43

Finding the Fourth Proportional to 9,863.79, 13,611.84 and 5,387.43

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Solution

The fourth proportional to 9,863.79, 13,611.84 and 5,387.43 is: 7,434.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,863.79 : 13,611.84 = 5,387.43 : x
  2. Step 2: Convert to fraction form
    9,863.79/13,611.84 = 5,387.43/x
  3. Step 3: Cross multiply
    9,863.79x = 13,611.84 × 5,387.43
  4. Step 4: Simplify right side
    9,863.79x = 73,332,835.17
  5. Step 5: Solve for x
    x = 73,332,835.17/9,863.79
  6. Step 6: Final answer
    x = 7,434.55

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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.