Home / 1,861.56-2,568.65-1,075.68

Finding the Fourth Proportional to 1,861.56, 2,568.65 and 1,075.68

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Solution

The fourth proportional to 1,861.56, 2,568.65 and 1,075.68 is: 1,484.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,861.56 : 2,568.65 = 1,075.68 : x
  2. Step 2: Convert to fraction form
    1,861.56/2,568.65 = 1,075.68/x
  3. Step 3: Cross multiply
    1,861.56x = 2,568.65 × 1,075.68
  4. Step 4: Simplify right side
    1,861.56x = 2,763,040.05
  5. Step 5: Solve for x
    x = 2,763,040.05/1,861.56
  6. Step 6: Final answer
    x = 1,484.26

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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.