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Finding the Fourth Proportional to 1,911.73, 2,867.14 and 741.13

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Solution

The fourth proportional to 1,911.73, 2,867.14 and 741.13 is: 1,111.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911.73 : 2,867.14 = 741.13 : x
  2. Step 2: Convert to fraction form
    1,911.73/2,867.14 = 741.13/x
  3. Step 3: Cross multiply
    1,911.73x = 2,867.14 × 741.13
  4. Step 4: Simplify right side
    1,911.73x = 2,124,923.47
  5. Step 5: Solve for x
    x = 2,124,923.47/1,911.73
  6. Step 6: Final answer
    x = 1,111.52

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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.