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Finding the Fourth Proportional to 2,840.79, 4,255.03 and 1,376.88

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Solution

The fourth proportional to 2,840.79, 4,255.03 and 1,376.88 is: 2,062.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,840.79 : 4,255.03 = 1,376.88 : x
  2. Step 2: Convert to fraction form
    2,840.79/4,255.03 = 1,376.88/x
  3. Step 3: Cross multiply
    2,840.79x = 4,255.03 × 1,376.88
  4. Step 4: Simplify right side
    2,840.79x = 5,858,665.71
  5. Step 5: Solve for x
    x = 5,858,665.71/2,840.79
  6. Step 6: Final answer
    x = 2,062.34

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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.