Home / 9,360.80-12,917.76-5,169.28

Finding the Fourth Proportional to 9,360.80, 12,917.76 and 5,169.28

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Solution

The fourth proportional to 9,360.80, 12,917.76 and 5,169.28 is: 7,133.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,360.80 : 12,917.76 = 5,169.28 : x
  2. Step 2: Convert to fraction form
    9,360.80/12,917.76 = 5,169.28/x
  3. Step 3: Cross multiply
    9,360.80x = 12,917.76 × 5,169.28
  4. Step 4: Simplify right side
    9,360.80x = 66,775,518.41
  5. Step 5: Solve for x
    x = 66,775,518.41/9,360.80
  6. Step 6: Final answer
    x = 7,133.53

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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.