Home / 1,209.20-1,651.40-1,196.24

Finding the Fourth Proportional to 1,209.20, 1,651.40 and 1,196.24

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Solution

The fourth proportional to 1,209.20, 1,651.40 and 1,196.24 is: 1,633.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209.20 : 1,651.40 = 1,196.24 : x
  2. Step 2: Convert to fraction form
    1,209.20/1,651.40 = 1,196.24/x
  3. Step 3: Cross multiply
    1,209.20x = 1,651.40 × 1,196.24
  4. Step 4: Simplify right side
    1,209.20x = 1,975,470.74
  5. Step 5: Solve for x
    x = 1,975,470.74/1,209.20
  6. Step 6: Final answer
    x = 1,633.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.