Home / 9,438.98-13,042.20-7,759.10

Finding the Fourth Proportional to 9,438.98, 13,042.20 and 7,759.10

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Solution

The fourth proportional to 9,438.98, 13,042.20 and 7,759.10 is: 10,721.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,438.98 : 13,042.20 = 7,759.10 : x
  2. Step 2: Convert to fraction form
    9,438.98/13,042.20 = 7,759.10/x
  3. Step 3: Cross multiply
    9,438.98x = 13,042.20 × 7,759.10
  4. Step 4: Simplify right side
    9,438.98x = 101,195,734.02
  5. Step 5: Solve for x
    x = 101,195,734.02/9,438.98
  6. Step 6: Final answer
    x = 10,721.05

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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.