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Finding the Fourth Proportional to 1,719, 2,574.36 and 1,100.79

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Solution

The fourth proportional to 1,719, 2,574.36 and 1,100.79 is: 1,648.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,719 : 2,574.36 = 1,100.79 : x
  2. Step 2: Convert to fraction form
    1,719/2,574.36 = 1,100.79/x
  3. Step 3: Cross multiply
    1,719x = 2,574.36 × 1,100.79
  4. Step 4: Simplify right side
    1,719x = 2,833,829.74
  5. Step 5: Solve for x
    x = 2,833,829.74/1,719
  6. Step 6: Final answer
    x = 1,648.53

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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.