Home / 1,959.60-2,938.10-1,177.65

Finding the Fourth Proportional to 1,959.60, 2,938.10 and 1,177.65

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Solution

The fourth proportional to 1,959.60, 2,938.10 and 1,177.65 is: 1,765.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,959.60 : 2,938.10 = 1,177.65 : x
  2. Step 2: Convert to fraction form
    1,959.60/2,938.10 = 1,177.65/x
  3. Step 3: Cross multiply
    1,959.60x = 2,938.10 × 1,177.65
  4. Step 4: Simplify right side
    1,959.60x = 3,460,047.58
  5. Step 5: Solve for x
    x = 3,460,047.58/1,959.60
  6. Step 6: Final answer
    x = 1,765.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.