Home / 1,861.47-2,568.68-1,075.57

Finding the Fourth Proportional to 1,861.47, 2,568.68 and 1,075.57

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Solution

The fourth proportional to 1,861.47, 2,568.68 and 1,075.57 is: 1,484.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,861.47 : 2,568.68 = 1,075.57 : x
  2. Step 2: Convert to fraction form
    1,861.47/2,568.68 = 1,075.57/x
  3. Step 3: Cross multiply
    1,861.47x = 2,568.68 × 1,075.57
  4. Step 4: Simplify right side
    1,861.47x = 2,762,787.38
  5. Step 5: Solve for x
    x = 2,762,787.38/1,861.47
  6. Step 6: Final answer
    x = 1,484.20

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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.