Home / 9,159.26-12,638.34-5,385.66

Finding the Fourth Proportional to 9,159.26, 12,638.34 and 5,385.66

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Solution

The fourth proportional to 9,159.26, 12,638.34 and 5,385.66 is: 7,431.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,159.26 : 12,638.34 = 5,385.66 : x
  2. Step 2: Convert to fraction form
    9,159.26/12,638.34 = 5,385.66/x
  3. Step 3: Cross multiply
    9,159.26x = 12,638.34 × 5,385.66
  4. Step 4: Simplify right side
    9,159.26x = 68,065,775.28
  5. Step 5: Solve for x
    x = 68,065,775.28/9,159.26
  6. Step 6: Final answer
    x = 7,431.36

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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.