Home / 2,421.80-3,342.36-1,359.74

Finding the Fourth Proportional to 2,421.80, 3,342.36 and 1,359.74

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Solution

The fourth proportional to 2,421.80, 3,342.36 and 1,359.74 is: 1,876.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,421.80 : 3,342.36 = 1,359.74 : x
  2. Step 2: Convert to fraction form
    2,421.80/3,342.36 = 1,359.74/x
  3. Step 3: Cross multiply
    2,421.80x = 3,342.36 × 1,359.74
  4. Step 4: Simplify right side
    2,421.80x = 4,544,723.87
  5. Step 5: Solve for x
    x = 4,544,723.87/2,421.80
  6. Step 6: Final answer
    x = 1,876.59

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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.