Home / 1,722.15-2,583.35-489.66

Finding the Fourth Proportional to 1,722.15, 2,583.35 and 489.66

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Solution

The fourth proportional to 1,722.15, 2,583.35 and 489.66 is: 734.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,722.15 : 2,583.35 = 489.66 : x
  2. Step 2: Convert to fraction form
    1,722.15/2,583.35 = 489.66/x
  3. Step 3: Cross multiply
    1,722.15x = 2,583.35 × 489.66
  4. Step 4: Simplify right side
    1,722.15x = 1,264,963.16
  5. Step 5: Solve for x
    x = 1,264,963.16/1,722.15
  6. Step 6: Final answer
    x = 734.53

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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.