Home / 1,876.23-2,589.30-1,213.65

Finding the Fourth Proportional to 1,876.23, 2,589.30 and 1,213.65

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Solution

The fourth proportional to 1,876.23, 2,589.30 and 1,213.65 is: 1,674.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,876.23 : 2,589.30 = 1,213.65 : x
  2. Step 2: Convert to fraction form
    1,876.23/2,589.30 = 1,213.65/x
  3. Step 3: Cross multiply
    1,876.23x = 2,589.30 × 1,213.65
  4. Step 4: Simplify right side
    1,876.23x = 3,142,503.95
  5. Step 5: Solve for x
    x = 3,142,503.95/1,876.23
  6. Step 6: Final answer
    x = 1,674.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.