Home / 2,108.18-3,161.45-874.95

Finding the Fourth Proportional to 2,108.18, 3,161.45 and 874.95

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Solution

The fourth proportional to 2,108.18, 3,161.45 and 874.95 is: 1,312.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,108.18 : 3,161.45 = 874.95 : x
  2. Step 2: Convert to fraction form
    2,108.18/3,161.45 = 874.95/x
  3. Step 3: Cross multiply
    2,108.18x = 3,161.45 × 874.95
  4. Step 4: Simplify right side
    2,108.18x = 2,766,106.30
  5. Step 5: Solve for x
    x = 2,766,106.30/2,108.18
  6. Step 6: Final answer
    x = 1,312.09

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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.