Home / 1,283.58-1,921.86-1,077.57

Finding the Fourth Proportional to 1,283.58, 1,921.86 and 1,077.57

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Solution

The fourth proportional to 1,283.58, 1,921.86 and 1,077.57 is: 1,613.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,283.58 : 1,921.86 = 1,077.57 : x
  2. Step 2: Convert to fraction form
    1,283.58/1,921.86 = 1,077.57/x
  3. Step 3: Cross multiply
    1,283.58x = 1,921.86 × 1,077.57
  4. Step 4: Simplify right side
    1,283.58x = 2,070,938.68
  5. Step 5: Solve for x
    x = 2,070,938.68/1,283.58
  6. Step 6: Final answer
    x = 1,613.41

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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.