Home / 1,779.71-2,456.87-1,116.92

Finding the Fourth Proportional to 1,779.71, 2,456.87 and 1,116.92

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Solution

The fourth proportional to 1,779.71, 2,456.87 and 1,116.92 is: 1,541.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,779.71 : 2,456.87 = 1,116.92 : x
  2. Step 2: Convert to fraction form
    1,779.71/2,456.87 = 1,116.92/x
  3. Step 3: Cross multiply
    1,779.71x = 2,456.87 × 1,116.92
  4. Step 4: Simplify right side
    1,779.71x = 2,744,109.37
  5. Step 5: Solve for x
    x = 2,744,109.37/1,779.71
  6. Step 6: Final answer
    x = 1,541.89

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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.