Home / 2,678.16-3,993.60-2,315.28

Finding the Fourth Proportional to 2,678.16, 3,993.60 and 2,315.28

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Solution

The fourth proportional to 2,678.16, 3,993.60 and 2,315.28 is: 3,452.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,678.16 : 3,993.60 = 2,315.28 : x
  2. Step 2: Convert to fraction form
    2,678.16/3,993.60 = 2,315.28/x
  3. Step 3: Cross multiply
    2,678.16x = 3,993.60 × 2,315.28
  4. Step 4: Simplify right side
    2,678.16x = 9,246,302.21
  5. Step 5: Solve for x
    x = 9,246,302.21/2,678.16
  6. Step 6: Final answer
    x = 3,452.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.