Home / 2,421.78-3,342.23-1,713.84

Finding the Fourth Proportional to 2,421.78, 3,342.23 and 1,713.84

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Solution

The fourth proportional to 2,421.78, 3,342.23 and 1,713.84 is: 2,365.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,421.78 : 3,342.23 = 1,713.84 : x
  2. Step 2: Convert to fraction form
    2,421.78/3,342.23 = 1,713.84/x
  3. Step 3: Cross multiply
    2,421.78x = 3,342.23 × 1,713.84
  4. Step 4: Simplify right side
    2,421.78x = 5,728,047.46
  5. Step 5: Solve for x
    x = 5,728,047.46/2,421.78
  6. Step 6: Final answer
    x = 2,365.22

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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.