Home / 2,389.86-3,296.88-1,725.66

Finding the Fourth Proportional to 2,389.86, 3,296.88 and 1,725.66

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Solution

The fourth proportional to 2,389.86, 3,296.88 and 1,725.66 is: 2,380.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,389.86 : 3,296.88 = 1,725.66 : x
  2. Step 2: Convert to fraction form
    2,389.86/3,296.88 = 1,725.66/x
  3. Step 3: Cross multiply
    2,389.86x = 3,296.88 × 1,725.66
  4. Step 4: Simplify right side
    2,389.86x = 5,689,293.94
  5. Step 5: Solve for x
    x = 5,689,293.94/2,389.86
  6. Step 6: Final answer
    x = 2,380.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.