Home / 1,748.57-2,621.93-515.79

Finding the Fourth Proportional to 1,748.57, 2,621.93 and 515.79

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Solution

The fourth proportional to 1,748.57, 2,621.93 and 515.79 is: 773.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,748.57 : 2,621.93 = 515.79 : x
  2. Step 2: Convert to fraction form
    1,748.57/2,621.93 = 515.79/x
  3. Step 3: Cross multiply
    1,748.57x = 2,621.93 × 515.79
  4. Step 4: Simplify right side
    1,748.57x = 1,352,362.70
  5. Step 5: Solve for x
    x = 1,352,362.70/1,748.57
  6. Step 6: Final answer
    x = 773.41

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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.