Home / 1,851.45-2,779.20-1,158.90

Finding the Fourth Proportional to 1,851.45, 2,779.20 and 1,158.90

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Solution

The fourth proportional to 1,851.45, 2,779.20 and 1,158.90 is: 1,739.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,851.45 : 2,779.20 = 1,158.90 : x
  2. Step 2: Convert to fraction form
    1,851.45/2,779.20 = 1,158.90/x
  3. Step 3: Cross multiply
    1,851.45x = 2,779.20 × 1,158.90
  4. Step 4: Simplify right side
    1,851.45x = 3,220,814.88
  5. Step 5: Solve for x
    x = 3,220,814.88/1,851.45
  6. Step 6: Final answer
    x = 1,739.62

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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.