Home / 9,378.18-12,941.89-5,129.26

Finding the Fourth Proportional to 9,378.18, 12,941.89 and 5,129.26

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Solution

The fourth proportional to 9,378.18, 12,941.89 and 5,129.26 is: 7,078.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,378.18 : 12,941.89 = 5,129.26 : x
  2. Step 2: Convert to fraction form
    9,378.18/12,941.89 = 5,129.26/x
  3. Step 3: Cross multiply
    9,378.18x = 12,941.89 × 5,129.26
  4. Step 4: Simplify right side
    9,378.18x = 66,382,273.52
  5. Step 5: Solve for x
    x = 66,382,273.52/9,378.18
  6. Step 6: Final answer
    x = 7,078.37

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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.