Home / 9,863.88-13,611.65-5,386.78

Finding the Fourth Proportional to 9,863.88, 13,611.65 and 5,386.78

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Solution

The fourth proportional to 9,863.88, 13,611.65 and 5,386.78 is: 7,433.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,863.88 : 13,611.65 = 5,386.78 : x
  2. Step 2: Convert to fraction form
    9,863.88/13,611.65 = 5,386.78/x
  3. Step 3: Cross multiply
    9,863.88x = 13,611.65 × 5,386.78
  4. Step 4: Simplify right side
    9,863.88x = 73,322,963.99
  5. Step 5: Solve for x
    x = 73,322,963.99/9,863.88
  6. Step 6: Final answer
    x = 7,433.48

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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.