Home / 3,913.80-5,868.78-1,937.15

Finding the Fourth Proportional to 3,913.80, 5,868.78 and 1,937.15

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Solution

The fourth proportional to 3,913.80, 5,868.78 and 1,937.15 is: 2,904.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913.80 : 5,868.78 = 1,937.15 : x
  2. Step 2: Convert to fraction form
    3,913.80/5,868.78 = 1,937.15/x
  3. Step 3: Cross multiply
    3,913.80x = 5,868.78 × 1,937.15
  4. Step 4: Simplify right side
    3,913.80x = 11,368,677.83
  5. Step 5: Solve for x
    x = 11,368,677.83/3,913.80
  6. Step 6: Final answer
    x = 2,904.77

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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.