Home / 1,779.38-2,455.65-1,116.46

Finding the Fourth Proportional to 1,779.38, 2,455.65 and 1,116.46

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Solution

The fourth proportional to 1,779.38, 2,455.65 and 1,116.46 is: 1,540.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,779.38 : 2,455.65 = 1,116.46 : x
  2. Step 2: Convert to fraction form
    1,779.38/2,455.65 = 1,116.46/x
  3. Step 3: Cross multiply
    1,779.38x = 2,455.65 × 1,116.46
  4. Step 4: Simplify right side
    1,779.38x = 2,741,638.07
  5. Step 5: Solve for x
    x = 2,741,638.07/1,779.38
  6. Step 6: Final answer
    x = 1,540.78

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1.5x scale

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.