Home / 9,378.03-12,941.15-5,128.24

Finding the Fourth Proportional to 9,378.03, 12,941.15 and 5,128.24

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Solution

The fourth proportional to 9,378.03, 12,941.15 and 5,128.24 is: 7,076.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,378.03 : 12,941.15 = 5,128.24 : x
  2. Step 2: Convert to fraction form
    9,378.03/12,941.15 = 5,128.24/x
  3. Step 3: Cross multiply
    9,378.03x = 12,941.15 × 5,128.24
  4. Step 4: Simplify right side
    9,378.03x = 66,365,335.90
  5. Step 5: Solve for x
    x = 66,365,335.90/9,378.03
  6. Step 6: Final answer
    x = 7,076.69

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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.