Home / 9,725.20-13,415.84-5,689.38

Finding the Fourth Proportional to 9,725.20, 13,415.84 and 5,689.38

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Solution

The fourth proportional to 9,725.20, 13,415.84 and 5,689.38 is: 7,848.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,725.20 : 13,415.84 = 5,689.38 : x
  2. Step 2: Convert to fraction form
    9,725.20/13,415.84 = 5,689.38/x
  3. Step 3: Cross multiply
    9,725.20x = 13,415.84 × 5,689.38
  4. Step 4: Simplify right side
    9,725.20x = 76,327,876.31
  5. Step 5: Solve for x
    x = 76,327,876.31/9,725.20
  6. Step 6: Final answer
    x = 7,848.47

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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.