Home / 1,861.60-2,568.82-1,075.90

Finding the Fourth Proportional to 1,861.60, 2,568.82 and 1,075.90

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Solution

The fourth proportional to 1,861.60, 2,568.82 and 1,075.90 is: 1,484.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,861.60 : 2,568.82 = 1,075.90 : x
  2. Step 2: Convert to fraction form
    1,861.60/2,568.82 = 1,075.90/x
  3. Step 3: Cross multiply
    1,861.60x = 2,568.82 × 1,075.90
  4. Step 4: Simplify right side
    1,861.60x = 2,763,793.44
  5. Step 5: Solve for x
    x = 2,763,793.44/1,861.60
  6. Step 6: Final answer
    x = 1,484.63

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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.