Home / 1,004.24-1,385.16-885.20

Finding the Fourth Proportional to 1,004.24, 1,385.16 and 885.20

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Solution

The fourth proportional to 1,004.24, 1,385.16 and 885.20 is: 1,220.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,004.24 : 1,385.16 = 885.20 : x
  2. Step 2: Convert to fraction form
    1,004.24/1,385.16 = 885.20/x
  3. Step 3: Cross multiply
    1,004.24x = 1,385.16 × 885.20
  4. Step 4: Simplify right side
    1,004.24x = 1,226,143.63
  5. Step 5: Solve for x
    x = 1,226,143.63/1,004.24
  6. Step 6: Final answer
    x = 1,220.97

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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.