Home / 1,517.10-2,093.66-919.79

Finding the Fourth Proportional to 1,517.10, 2,093.66 and 919.79

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Solution

The fourth proportional to 1,517.10, 2,093.66 and 919.79 is: 1,269.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,517.10 : 2,093.66 = 919.79 : x
  2. Step 2: Convert to fraction form
    1,517.10/2,093.66 = 919.79/x
  3. Step 3: Cross multiply
    1,517.10x = 2,093.66 × 919.79
  4. Step 4: Simplify right side
    1,517.10x = 1,925,712.46
  5. Step 5: Solve for x
    x = 1,925,712.46/1,517.10
  6. Step 6: Final answer
    x = 1,269.34

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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.