Home / 1,861.48-2,568.55-1,075.38

Finding the Fourth Proportional to 1,861.48, 2,568.55 and 1,075.38

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Solution

The fourth proportional to 1,861.48, 2,568.55 and 1,075.38 is: 1,483.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,861.48 : 2,568.55 = 1,075.38 : x
  2. Step 2: Convert to fraction form
    1,861.48/2,568.55 = 1,075.38/x
  3. Step 3: Cross multiply
    1,861.48x = 2,568.55 × 1,075.38
  4. Step 4: Simplify right side
    1,861.48x = 2,762,154.46
  5. Step 5: Solve for x
    x = 2,762,154.46/1,861.48
  6. Step 6: Final answer
    x = 1,483.85

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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.