Home / 1,912.81-2,869.23-526.29

Finding the Fourth Proportional to 1,912.81, 2,869.23 and 526.29

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Solution

The fourth proportional to 1,912.81, 2,869.23 and 526.29 is: 789.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,912.81 : 2,869.23 = 526.29 : x
  2. Step 2: Convert to fraction form
    1,912.81/2,869.23 = 526.29/x
  3. Step 3: Cross multiply
    1,912.81x = 2,869.23 × 526.29
  4. Step 4: Simplify right side
    1,912.81x = 1,510,047.28
  5. Step 5: Solve for x
    x = 1,510,047.28/1,912.81
  6. Step 6: Final answer
    x = 789.44

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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.