Home / 2,415.89-3,335.82-1,855.47

Finding the Fourth Proportional to 2,415.89, 3,335.82 and 1,855.47

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Solution

The fourth proportional to 2,415.89, 3,335.82 and 1,855.47 is: 2,562.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,415.89 : 3,335.82 = 1,855.47 : x
  2. Step 2: Convert to fraction form
    2,415.89/3,335.82 = 1,855.47/x
  3. Step 3: Cross multiply
    2,415.89x = 3,335.82 × 1,855.47
  4. Step 4: Simplify right side
    2,415.89x = 6,189,519.49
  5. Step 5: Solve for x
    x = 6,189,519.49/2,415.89
  6. Step 6: Final answer
    x = 2,562.00

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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.