Home / 1,836.80-2,535.06-1,209.14

Finding the Fourth Proportional to 1,836.80, 2,535.06 and 1,209.14

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Solution

The fourth proportional to 1,836.80, 2,535.06 and 1,209.14 is: 1,668.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,836.80 : 2,535.06 = 1,209.14 : x
  2. Step 2: Convert to fraction form
    1,836.80/2,535.06 = 1,209.14/x
  3. Step 3: Cross multiply
    1,836.80x = 2,535.06 × 1,209.14
  4. Step 4: Simplify right side
    1,836.80x = 3,065,242.45
  5. Step 5: Solve for x
    x = 3,065,242.45/1,836.80
  6. Step 6: Final answer
    x = 1,668.79

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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.