Home / 2,426.78-3,348.20-1,378.64

Finding the Fourth Proportional to 2,426.78, 3,348.20 and 1,378.64

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Solution

The fourth proportional to 2,426.78, 3,348.20 and 1,378.64 is: 1,902.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,426.78 : 3,348.20 = 1,378.64 : x
  2. Step 2: Convert to fraction form
    2,426.78/3,348.20 = 1,378.64/x
  3. Step 3: Cross multiply
    2,426.78x = 3,348.20 × 1,378.64
  4. Step 4: Simplify right side
    2,426.78x = 4,615,962.45
  5. Step 5: Solve for x
    x = 4,615,962.45/2,426.78
  6. Step 6: Final answer
    x = 1,902.09

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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.