Home / 1,779.68-2,456.52-1,219.94

Finding the Fourth Proportional to 1,779.68, 2,456.52 and 1,219.94

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Solution

The fourth proportional to 1,779.68, 2,456.52 and 1,219.94 is: 1,683.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,779.68 : 2,456.52 = 1,219.94 : x
  2. Step 2: Convert to fraction form
    1,779.68/2,456.52 = 1,219.94/x
  3. Step 3: Cross multiply
    1,779.68x = 2,456.52 × 1,219.94
  4. Step 4: Simplify right side
    1,779.68x = 2,996,807.01
  5. Step 5: Solve for x
    x = 2,996,807.01/1,779.68
  6. Step 6: Final answer
    x = 1,683.90

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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.