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Finding the Fourth Proportional to 2,888.78, 4,331.79 and 1,426.22

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Solution

The fourth proportional to 2,888.78, 4,331.79 and 1,426.22 is: 2,138.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,888.78 : 4,331.79 = 1,426.22 : x
  2. Step 2: Convert to fraction form
    2,888.78/4,331.79 = 1,426.22/x
  3. Step 3: Cross multiply
    2,888.78x = 4,331.79 × 1,426.22
  4. Step 4: Simplify right side
    2,888.78x = 6,178,080.12
  5. Step 5: Solve for x
    x = 6,178,080.12/2,888.78
  6. Step 6: Final answer
    x = 2,138.65

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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.