Home / 2,779.40-4,165.92-1,316.48

Finding the Fourth Proportional to 2,779.40, 4,165.92 and 1,316.48

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Solution

The fourth proportional to 2,779.40, 4,165.92 and 1,316.48 is: 1,973.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,779.40 : 4,165.92 = 1,316.48 : x
  2. Step 2: Convert to fraction form
    2,779.40/4,165.92 = 1,316.48/x
  3. Step 3: Cross multiply
    2,779.40x = 4,165.92 × 1,316.48
  4. Step 4: Simplify right side
    2,779.40x = 5,484,350.36
  5. Step 5: Solve for x
    x = 5,484,350.36/2,779.40
  6. Step 6: Final answer
    x = 1,973.21

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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.