Home / 2,818.60-4,229.10-1,779.40

Finding the Fourth Proportional to 2,818.60, 4,229.10 and 1,779.40

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Solution

The fourth proportional to 2,818.60, 4,229.10 and 1,779.40 is: 2,669.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,818.60 : 4,229.10 = 1,779.40 : x
  2. Step 2: Convert to fraction form
    2,818.60/4,229.10 = 1,779.40/x
  3. Step 3: Cross multiply
    2,818.60x = 4,229.10 × 1,779.40
  4. Step 4: Simplify right side
    2,818.60x = 7,525,260.54
  5. Step 5: Solve for x
    x = 7,525,260.54/2,818.60
  6. Step 6: Final answer
    x = 2,669.86

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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.