Home / 2,808.18-3,874.06-1,688.47

Finding the Fourth Proportional to 2,808.18, 3,874.06 and 1,688.47

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Solution

The fourth proportional to 2,808.18, 3,874.06 and 1,688.47 is: 2,329.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,808.18 : 3,874.06 = 1,688.47 : x
  2. Step 2: Convert to fraction form
    2,808.18/3,874.06 = 1,688.47/x
  3. Step 3: Cross multiply
    2,808.18x = 3,874.06 × 1,688.47
  4. Step 4: Simplify right side
    2,808.18x = 6,541,225.65
  5. Step 5: Solve for x
    x = 6,541,225.65/2,808.18
  6. Step 6: Final answer
    x = 2,329.35

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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.