Home / 1,861.28-2,568.38-1,075.22

Finding the Fourth Proportional to 1,861.28, 2,568.38 and 1,075.22

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Solution

The fourth proportional to 1,861.28, 2,568.38 and 1,075.22 is: 1,483.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,861.28 : 2,568.38 = 1,075.22 : x
  2. Step 2: Convert to fraction form
    1,861.28/2,568.38 = 1,075.22/x
  3. Step 3: Cross multiply
    1,861.28x = 2,568.38 × 1,075.22
  4. Step 4: Simplify right side
    1,861.28x = 2,761,573.54
  5. Step 5: Solve for x
    x = 2,761,573.54/1,861.28
  6. Step 6: Final answer
    x = 1,483.70

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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.