Home / 1,861.72-2,569.17-1,075.77

Finding the Fourth Proportional to 1,861.72, 2,569.17 and 1,075.77

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Solution

The fourth proportional to 1,861.72, 2,569.17 and 1,075.77 is: 1,484.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,861.72 : 2,569.17 = 1,075.77 : x
  2. Step 2: Convert to fraction form
    1,861.72/2,569.17 = 1,075.77/x
  3. Step 3: Cross multiply
    1,861.72x = 2,569.17 × 1,075.77
  4. Step 4: Simplify right side
    1,861.72x = 2,763,836.01
  5. Step 5: Solve for x
    x = 2,763,836.01/1,861.72
  6. Step 6: Final answer
    x = 1,484.56

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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.