Home / 2,898.72-4,345.20-1,360.80

Finding the Fourth Proportional to 2,898.72, 4,345.20 and 1,360.80

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Solution

The fourth proportional to 2,898.72, 4,345.20 and 1,360.80 is: 2,039.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,898.72 : 4,345.20 = 1,360.80 : x
  2. Step 2: Convert to fraction form
    2,898.72/4,345.20 = 1,360.80/x
  3. Step 3: Cross multiply
    2,898.72x = 4,345.20 × 1,360.80
  4. Step 4: Simplify right side
    2,898.72x = 5,912,948.16
  5. Step 5: Solve for x
    x = 5,912,948.16/2,898.72
  6. Step 6: Final answer
    x = 2,039.85

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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.