Home / 9,320.46-12,862.26-5,128.80

Finding the Fourth Proportional to 9,320.46, 12,862.26 and 5,128.80

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Solution

The fourth proportional to 9,320.46, 12,862.26 and 5,128.80 is: 7,077.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,320.46 : 12,862.26 = 5,128.80 : x
  2. Step 2: Convert to fraction form
    9,320.46/12,862.26 = 5,128.80/x
  3. Step 3: Cross multiply
    9,320.46x = 12,862.26 × 5,128.80
  4. Step 4: Simplify right side
    9,320.46x = 65,967,959.09
  5. Step 5: Solve for x
    x = 65,967,959.09/9,320.46
  6. Step 6: Final answer
    x = 7,077.76

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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.