Home / 1,791.40-2,686.65-1,206.08

Finding the Fourth Proportional to 1,791.40, 2,686.65 and 1,206.08

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Solution

The fourth proportional to 1,791.40, 2,686.65 and 1,206.08 is: 1,808.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,791.40 : 2,686.65 = 1,206.08 : x
  2. Step 2: Convert to fraction form
    1,791.40/2,686.65 = 1,206.08/x
  3. Step 3: Cross multiply
    1,791.40x = 2,686.65 × 1,206.08
  4. Step 4: Simplify right side
    1,791.40x = 3,240,314.83
  5. Step 5: Solve for x
    x = 3,240,314.83/1,791.40
  6. Step 6: Final answer
    x = 1,808.82

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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.