Home / 1,885.11-2,821.71-1,686.99

Finding the Fourth Proportional to 1,885.11, 2,821.71 and 1,686.99

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Solution

The fourth proportional to 1,885.11, 2,821.71 and 1,686.99 is: 2,525.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,885.11 : 2,821.71 = 1,686.99 : x
  2. Step 2: Convert to fraction form
    1,885.11/2,821.71 = 1,686.99/x
  3. Step 3: Cross multiply
    1,885.11x = 2,821.71 × 1,686.99
  4. Step 4: Simplify right side
    1,885.11x = 4,760,196.55
  5. Step 5: Solve for x
    x = 4,760,196.55/1,885.11
  6. Step 6: Final answer
    x = 2,525.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.