Home / 1,865.76-2,574.61-1,079.92

Finding the Fourth Proportional to 1,865.76, 2,574.61 and 1,079.92

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Solution

The fourth proportional to 1,865.76, 2,574.61 and 1,079.92 is: 1,490.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,865.76 : 2,574.61 = 1,079.92 : x
  2. Step 2: Convert to fraction form
    1,865.76/2,574.61 = 1,079.92/x
  3. Step 3: Cross multiply
    1,865.76x = 2,574.61 × 1,079.92
  4. Step 4: Simplify right side
    1,865.76x = 2,780,372.83
  5. Step 5: Solve for x
    x = 2,780,372.83/1,865.76
  6. Step 6: Final answer
    x = 1,490.21

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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.