Home / 1,502.20-2,072.28-1,004.86

Finding the Fourth Proportional to 1,502.20, 2,072.28 and 1,004.86

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Solution

The fourth proportional to 1,502.20, 2,072.28 and 1,004.86 is: 1,386.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,502.20 : 2,072.28 = 1,004.86 : x
  2. Step 2: Convert to fraction form
    1,502.20/2,072.28 = 1,004.86/x
  3. Step 3: Cross multiply
    1,502.20x = 2,072.28 × 1,004.86
  4. Step 4: Simplify right side
    1,502.20x = 2,082,351.28
  5. Step 5: Solve for x
    x = 2,082,351.28/1,502.20
  6. Step 6: Final answer
    x = 1,386.20

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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.