Home / 1,868.91-2,803.06-1,319.42

Finding the Fourth Proportional to 1,868.91, 2,803.06 and 1,319.42

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Solution

The fourth proportional to 1,868.91, 2,803.06 and 1,319.42 is: 1,978.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,868.91 : 2,803.06 = 1,319.42 : x
  2. Step 2: Convert to fraction form
    1,868.91/2,803.06 = 1,319.42/x
  3. Step 3: Cross multiply
    1,868.91x = 2,803.06 × 1,319.42
  4. Step 4: Simplify right side
    1,868.91x = 3,698,414.66
  5. Step 5: Solve for x
    x = 3,698,414.66/1,868.91
  6. Step 6: Final answer
    x = 1,978.92

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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.