Home / 9,854.78-13,599.09-5,378.49

Finding the Fourth Proportional to 9,854.78, 13,599.09 and 5,378.49

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Solution

The fourth proportional to 9,854.78, 13,599.09 and 5,378.49 is: 7,422.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,854.78 : 13,599.09 = 5,378.49 : x
  2. Step 2: Convert to fraction form
    9,854.78/13,599.09 = 5,378.49/x
  3. Step 3: Cross multiply
    9,854.78x = 13,599.09 × 5,378.49
  4. Step 4: Simplify right side
    9,854.78x = 73,142,569.57
  5. Step 5: Solve for x
    x = 73,142,569.57/9,854.78
  6. Step 6: Final answer
    x = 7,422.04

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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.