Home / 2,078.16-3,115.14-1,348.20

Finding the Fourth Proportional to 2,078.16, 3,115.14 and 1,348.20

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Solution

The fourth proportional to 2,078.16, 3,115.14 and 1,348.20 is: 2,020.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,078.16 : 3,115.14 = 1,348.20 : x
  2. Step 2: Convert to fraction form
    2,078.16/3,115.14 = 1,348.20/x
  3. Step 3: Cross multiply
    2,078.16x = 3,115.14 × 1,348.20
  4. Step 4: Simplify right side
    2,078.16x = 4,199,831.75
  5. Step 5: Solve for x
    x = 4,199,831.75/2,078.16
  6. Step 6: Final answer
    x = 2,020.94

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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.