Home / 9,378.25-12,941.50-5,128.48

Finding the Fourth Proportional to 9,378.25, 12,941.50 and 5,128.48

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Solution

The fourth proportional to 9,378.25, 12,941.50 and 5,128.48 is: 7,077.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,378.25 : 12,941.50 = 5,128.48 : x
  2. Step 2: Convert to fraction form
    9,378.25/12,941.50 = 5,128.48/x
  3. Step 3: Cross multiply
    9,378.25x = 12,941.50 × 5,128.48
  4. Step 4: Simplify right side
    9,378.25x = 66,370,198.28
  5. Step 5: Solve for x
    x = 66,370,198.28/9,378.25
  6. Step 6: Final answer
    x = 7,077.04

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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.