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Finding the Fourth Proportional to 2,913.90, 4,371.10 and 833.90

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Solution

The fourth proportional to 2,913.90, 4,371.10 and 833.90 is: 1,250.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,913.90 : 4,371.10 = 833.90 : x
  2. Step 2: Convert to fraction form
    2,913.90/4,371.10 = 833.90/x
  3. Step 3: Cross multiply
    2,913.90x = 4,371.10 × 833.90
  4. Step 4: Simplify right side
    2,913.90x = 3,645,060.29
  5. Step 5: Solve for x
    x = 3,645,060.29/2,913.90
  6. Step 6: Final answer
    x = 1,250.92

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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.