Home / 1,712.80-2,569.20-1,323.37

Finding the Fourth Proportional to 1,712.80, 2,569.20 and 1,323.37

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Solution

The fourth proportional to 1,712.80, 2,569.20 and 1,323.37 is: 1,985.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,712.80 : 2,569.20 = 1,323.37 : x
  2. Step 2: Convert to fraction form
    1,712.80/2,569.20 = 1,323.37/x
  3. Step 3: Cross multiply
    1,712.80x = 2,569.20 × 1,323.37
  4. Step 4: Simplify right side
    1,712.80x = 3,399,982.74
  5. Step 5: Solve for x
    x = 3,399,982.74/1,712.80
  6. Step 6: Final answer
    x = 1,985.04

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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.