Home / 2,260.23-3,390.34-1,287.15

Finding the Fourth Proportional to 2,260.23, 3,390.34 and 1,287.15

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Solution

The fourth proportional to 2,260.23, 3,390.34 and 1,287.15 is: 1,930.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,260.23 : 3,390.34 = 1,287.15 : x
  2. Step 2: Convert to fraction form
    2,260.23/3,390.34 = 1,287.15/x
  3. Step 3: Cross multiply
    2,260.23x = 3,390.34 × 1,287.15
  4. Step 4: Simplify right side
    2,260.23x = 4,363,876.13
  5. Step 5: Solve for x
    x = 4,363,876.13/2,260.23
  6. Step 6: Final answer
    x = 1,930.72

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1.5x scale

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.