Home / 9,868.64-13,618.49-5,392.40

Finding the Fourth Proportional to 9,868.64, 13,618.49 and 5,392.40

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Solution

The fourth proportional to 9,868.64, 13,618.49 and 5,392.40 is: 7,441.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,868.64 : 13,618.49 = 5,392.40 : x
  2. Step 2: Convert to fraction form
    9,868.64/13,618.49 = 5,392.40/x
  3. Step 3: Cross multiply
    9,868.64x = 13,618.49 × 5,392.40
  4. Step 4: Simplify right side
    9,868.64x = 73,436,250.42
  5. Step 5: Solve for x
    x = 73,436,250.42/9,868.64
  6. Step 6: Final answer
    x = 7,441.38

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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.