Home / 3,115.14-4,298.54-1,855.95

Finding the Fourth Proportional to 3,115.14, 4,298.54 and 1,855.95

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Solution

The fourth proportional to 3,115.14, 4,298.54 and 1,855.95 is: 2,561.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.14 : 4,298.54 = 1,855.95 : x
  2. Step 2: Convert to fraction form
    3,115.14/4,298.54 = 1,855.95/x
  3. Step 3: Cross multiply
    3,115.14x = 4,298.54 × 1,855.95
  4. Step 4: Simplify right side
    3,115.14x = 7,977,849.91
  5. Step 5: Solve for x
    x = 7,977,849.91/3,115.14
  6. Step 6: Final answer
    x = 2,561.00

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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.