Home / 2,151.69-2,969.66-1,267.58

Finding the Fourth Proportional to 2,151.69, 2,969.66 and 1,267.58

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Solution

The fourth proportional to 2,151.69, 2,969.66 and 1,267.58 is: 1,749.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,151.69 : 2,969.66 = 1,267.58 : x
  2. Step 2: Convert to fraction form
    2,151.69/2,969.66 = 1,267.58/x
  3. Step 3: Cross multiply
    2,151.69x = 2,969.66 × 1,267.58
  4. Step 4: Simplify right side
    2,151.69x = 3,764,260.44
  5. Step 5: Solve for x
    x = 3,764,260.44/2,151.69
  6. Step 6: Final answer
    x = 1,749.44

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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.