Home / 9,205.80-12,708.28-5,427.70

Finding the Fourth Proportional to 9,205.80, 12,708.28 and 5,427.70

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Solution

The fourth proportional to 9,205.80, 12,708.28 and 5,427.70 is: 7,492.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,205.80 : 12,708.28 = 5,427.70 : x
  2. Step 2: Convert to fraction form
    9,205.80/12,708.28 = 5,427.70/x
  3. Step 3: Cross multiply
    9,205.80x = 12,708.28 × 5,427.70
  4. Step 4: Simplify right side
    9,205.80x = 68,976,731.36
  5. Step 5: Solve for x
    x = 68,976,731.36/9,205.80
  6. Step 6: Final answer
    x = 7,492.75

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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.