Home / 9,863.45-13,611.79-5,387.15

Finding the Fourth Proportional to 9,863.45, 13,611.79 and 5,387.15

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Solution

The fourth proportional to 9,863.45, 13,611.79 and 5,387.15 is: 7,434.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,863.45 : 13,611.79 = 5,387.15 : x
  2. Step 2: Convert to fraction form
    9,863.45/13,611.79 = 5,387.15/x
  3. Step 3: Cross multiply
    9,863.45x = 13,611.79 × 5,387.15
  4. Step 4: Simplify right side
    9,863.45x = 73,328,795.26
  5. Step 5: Solve for x
    x = 73,328,795.26/9,863.45
  6. Step 6: Final answer
    x = 7,434.40

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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.