Home / 1,808.30-2,497.50-1,217.81

Finding the Fourth Proportional to 1,808.30, 2,497.50 and 1,217.81

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Solution

The fourth proportional to 1,808.30, 2,497.50 and 1,217.81 is: 1,681.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,808.30 : 2,497.50 = 1,217.81 : x
  2. Step 2: Convert to fraction form
    1,808.30/2,497.50 = 1,217.81/x
  3. Step 3: Cross multiply
    1,808.30x = 2,497.50 × 1,217.81
  4. Step 4: Simplify right side
    1,808.30x = 3,041,472.67
  5. Step 5: Solve for x
    x = 3,041,472.67/1,808.30
  6. Step 6: Final answer
    x = 1,681.95

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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.