Home / 2,811.10-4,206.06-1,681.18

Finding the Fourth Proportional to 2,811.10, 4,206.06 and 1,681.18

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Solution

The fourth proportional to 2,811.10, 4,206.06 and 1,681.18 is: 2,515.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.10 : 4,206.06 = 1,681.18 : x
  2. Step 2: Convert to fraction form
    2,811.10/4,206.06 = 1,681.18/x
  3. Step 3: Cross multiply
    2,811.10x = 4,206.06 × 1,681.18
  4. Step 4: Simplify right side
    2,811.10x = 7,071,143.95
  5. Step 5: Solve for x
    x = 7,071,143.95/2,811.10
  6. Step 6: Final answer
    x = 2,515.44

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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.