Home / 1,861.79-2,569.19-1,075.82

Finding the Fourth Proportional to 1,861.79, 2,569.19 and 1,075.82

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Solution

The fourth proportional to 1,861.79, 2,569.19 and 1,075.82 is: 1,484.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,861.79 : 2,569.19 = 1,075.82 : x
  2. Step 2: Convert to fraction form
    1,861.79/2,569.19 = 1,075.82/x
  3. Step 3: Cross multiply
    1,861.79x = 2,569.19 × 1,075.82
  4. Step 4: Simplify right side
    1,861.79x = 2,763,967.76
  5. Step 5: Solve for x
    x = 2,763,967.76/1,861.79
  6. Step 6: Final answer
    x = 1,484.58

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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.