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Finding the Fourth Proportional to 2,000.63, 2,988.80 and 1,672.58

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Solution

The fourth proportional to 2,000.63, 2,988.80 and 1,672.58 is: 2,498.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,000.63 : 2,988.80 = 1,672.58 : x
  2. Step 2: Convert to fraction form
    2,000.63/2,988.80 = 1,672.58/x
  3. Step 3: Cross multiply
    2,000.63x = 2,988.80 × 1,672.58
  4. Step 4: Simplify right side
    2,000.63x = 4,998,983.80
  5. Step 5: Solve for x
    x = 4,998,983.80/2,000.63
  6. Step 6: Final answer
    x = 2,498.71

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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.