Home / 1,912.11-2,870.08-1,132.89

Finding the Fourth Proportional to 1,912.11, 2,870.08 and 1,132.89

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Solution

The fourth proportional to 1,912.11, 2,870.08 and 1,132.89 is: 1,700.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,912.11 : 2,870.08 = 1,132.89 : x
  2. Step 2: Convert to fraction form
    1,912.11/2,870.08 = 1,132.89/x
  3. Step 3: Cross multiply
    1,912.11x = 2,870.08 × 1,132.89
  4. Step 4: Simplify right side
    1,912.11x = 3,251,477.71
  5. Step 5: Solve for x
    x = 3,251,477.71/1,912.11
  6. Step 6: Final answer
    x = 1,700.47

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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.