Home / 2,320.16-3,201.80-1,272.16

Finding the Fourth Proportional to 2,320.16, 3,201.80 and 1,272.16

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Solution

The fourth proportional to 2,320.16, 3,201.80 and 1,272.16 is: 1,755.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,320.16 : 3,201.80 = 1,272.16 : x
  2. Step 2: Convert to fraction form
    2,320.16/3,201.80 = 1,272.16/x
  3. Step 3: Cross multiply
    2,320.16x = 3,201.80 × 1,272.16
  4. Step 4: Simplify right side
    2,320.16x = 4,073,201.89
  5. Step 5: Solve for x
    x = 4,073,201.89/2,320.16
  6. Step 6: Final answer
    x = 1,755.57

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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.