Home / 2,078.16-3,117.36-1,772.16

Finding the Fourth Proportional to 2,078.16, 3,117.36 and 1,772.16

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Solution

The fourth proportional to 2,078.16, 3,117.36 and 1,772.16 is: 2,658.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,078.16 : 3,117.36 = 1,772.16 : x
  2. Step 2: Convert to fraction form
    2,078.16/3,117.36 = 1,772.16/x
  3. Step 3: Cross multiply
    2,078.16x = 3,117.36 × 1,772.16
  4. Step 4: Simplify right side
    2,078.16x = 5,524,460.70
  5. Step 5: Solve for x
    x = 5,524,460.70/2,078.16
  6. Step 6: Final answer
    x = 2,658.34

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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.