Home / 1,574.03-2,172.15-865.86

Finding the Fourth Proportional to 1,574.03, 2,172.15 and 865.86

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Solution

The fourth proportional to 1,574.03, 2,172.15 and 865.86 is: 1,194.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,574.03 : 2,172.15 = 865.86 : x
  2. Step 2: Convert to fraction form
    1,574.03/2,172.15 = 865.86/x
  3. Step 3: Cross multiply
    1,574.03x = 2,172.15 × 865.86
  4. Step 4: Simplify right side
    1,574.03x = 1,880,777.80
  5. Step 5: Solve for x
    x = 1,880,777.80/1,574.03
  6. Step 6: Final answer
    x = 1,194.88

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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.