Home / 2,151.66-2,969.40-1,267.74

Finding the Fourth Proportional to 2,151.66, 2,969.40 and 1,267.74

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Solution

The fourth proportional to 2,151.66, 2,969.40 and 1,267.74 is: 1,749.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,151.66 : 2,969.40 = 1,267.74 : x
  2. Step 2: Convert to fraction form
    2,151.66/2,969.40 = 1,267.74/x
  3. Step 3: Cross multiply
    2,151.66x = 2,969.40 × 1,267.74
  4. Step 4: Simplify right side
    2,151.66x = 3,764,427.16
  5. Step 5: Solve for x
    x = 3,764,427.16/2,151.66
  6. Step 6: Final answer
    x = 1,749.55

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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.