Home / 2,066.78-3,101.26-1,130.40

Finding the Fourth Proportional to 2,066.78, 3,101.26 and 1,130.40

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Solution

The fourth proportional to 2,066.78, 3,101.26 and 1,130.40 is: 1,696.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,066.78 : 3,101.26 = 1,130.40 : x
  2. Step 2: Convert to fraction form
    2,066.78/3,101.26 = 1,130.40/x
  3. Step 3: Cross multiply
    2,066.78x = 3,101.26 × 1,130.40
  4. Step 4: Simplify right side
    2,066.78x = 3,505,664.30
  5. Step 5: Solve for x
    x = 3,505,664.30/2,066.78
  6. Step 6: Final answer
    x = 1,696.20

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1.5x scale

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.