Home / 2,135.38-2,946.75-1,191.14

Finding the Fourth Proportional to 2,135.38, 2,946.75 and 1,191.14

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Solution

The fourth proportional to 2,135.38, 2,946.75 and 1,191.14 is: 1,643.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,135.38 : 2,946.75 = 1,191.14 : x
  2. Step 2: Convert to fraction form
    2,135.38/2,946.75 = 1,191.14/x
  3. Step 3: Cross multiply
    2,135.38x = 2,946.75 × 1,191.14
  4. Step 4: Simplify right side
    2,135.38x = 3,509,991.80
  5. Step 5: Solve for x
    x = 3,509,991.80/2,135.38
  6. Step 6: Final answer
    x = 1,643.73

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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.