Home / 3,712.80-5,568.84-976.80

Finding the Fourth Proportional to 3,712.80, 5,568.84 and 976.80

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Solution

The fourth proportional to 3,712.80, 5,568.84 and 976.80 is: 1,465.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,712.80 : 5,568.84 = 976.80 : x
  2. Step 2: Convert to fraction form
    3,712.80/5,568.84 = 976.80/x
  3. Step 3: Cross multiply
    3,712.80x = 5,568.84 × 976.80
  4. Step 4: Simplify right side
    3,712.80x = 5,439,642.91
  5. Step 5: Solve for x
    x = 5,439,642.91/3,712.80
  6. Step 6: Final answer
    x = 1,465.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.