Home / 3,648.80-5,039.16-2,868.56

Finding the Fourth Proportional to 3,648.80, 5,039.16 and 2,868.56

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Solution

The fourth proportional to 3,648.80, 5,039.16 and 2,868.56 is: 3,961.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,648.80 : 5,039.16 = 2,868.56 : x
  2. Step 2: Convert to fraction form
    3,648.80/5,039.16 = 2,868.56/x
  3. Step 3: Cross multiply
    3,648.80x = 5,039.16 × 2,868.56
  4. Step 4: Simplify right side
    3,648.80x = 14,455,132.81
  5. Step 5: Solve for x
    x = 14,455,132.81/3,648.80
  6. Step 6: Final answer
    x = 3,961.61

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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.