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Finding the Fourth Proportional to 2,889.80, 4,337.90 and 2,701.80

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Solution

The fourth proportional to 2,889.80, 4,337.90 and 2,701.80 is: 4,055.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,889.80 : 4,337.90 = 2,701.80 : x
  2. Step 2: Convert to fraction form
    2,889.80/4,337.90 = 2,701.80/x
  3. Step 3: Cross multiply
    2,889.80x = 4,337.90 × 2,701.80
  4. Step 4: Simplify right side
    2,889.80x = 11,720,138.22
  5. Step 5: Solve for x
    x = 11,720,138.22/2,889.80
  6. Step 6: Final answer
    x = 4,055.69

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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.