Home / 1,858.80-2,782.68-1,126.16

Finding the Fourth Proportional to 1,858.80, 2,782.68 and 1,126.16

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Solution

The fourth proportional to 1,858.80, 2,782.68 and 1,126.16 is: 1,685.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,858.80 : 2,782.68 = 1,126.16 : x
  2. Step 2: Convert to fraction form
    1,858.80/2,782.68 = 1,126.16/x
  3. Step 3: Cross multiply
    1,858.80x = 2,782.68 × 1,126.16
  4. Step 4: Simplify right side
    1,858.80x = 3,133,742.91
  5. Step 5: Solve for x
    x = 3,133,742.91/1,858.80
  6. Step 6: Final answer
    x = 1,685.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.