Home / 1,648.60-2,275.24-985.66

Finding the Fourth Proportional to 1,648.60, 2,275.24 and 985.66

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Solution

The fourth proportional to 1,648.60, 2,275.24 and 985.66 is: 1,360.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,648.60 : 2,275.24 = 985.66 : x
  2. Step 2: Convert to fraction form
    1,648.60/2,275.24 = 985.66/x
  3. Step 3: Cross multiply
    1,648.60x = 2,275.24 × 985.66
  4. Step 4: Simplify right side
    1,648.60x = 2,242,613.06
  5. Step 5: Solve for x
    x = 2,242,613.06/1,648.60
  6. Step 6: Final answer
    x = 1,360.31

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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.