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Finding the Fourth Proportional to 1,988.95, 2,983.41 and 833.89

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Solution

The fourth proportional to 1,988.95, 2,983.41 and 833.89 is: 1,250.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988.95 : 2,983.41 = 833.89 : x
  2. Step 2: Convert to fraction form
    1,988.95/2,983.41 = 833.89/x
  3. Step 3: Cross multiply
    1,988.95x = 2,983.41 × 833.89
  4. Step 4: Simplify right side
    1,988.95x = 2,487,835.76
  5. Step 5: Solve for x
    x = 2,487,835.76/1,988.95
  6. Step 6: Final answer
    x = 1,250.83

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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.