Home / 1,719.36-2,374.52-1,421.69

Finding the Fourth Proportional to 1,719.36, 2,374.52 and 1,421.69

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Solution

The fourth proportional to 1,719.36, 2,374.52 and 1,421.69 is: 1,963.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,719.36 : 2,374.52 = 1,421.69 : x
  2. Step 2: Convert to fraction form
    1,719.36/2,374.52 = 1,421.69/x
  3. Step 3: Cross multiply
    1,719.36x = 2,374.52 × 1,421.69
  4. Step 4: Simplify right side
    1,719.36x = 3,375,812.36
  5. Step 5: Solve for x
    x = 3,375,812.36/1,719.36
  6. Step 6: Final answer
    x = 1,963.41

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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.