Home / 1,912.49-2,869.15-614.87

Finding the Fourth Proportional to 1,912.49, 2,869.15 and 614.87

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Solution

The fourth proportional to 1,912.49, 2,869.15 and 614.87 is: 922.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,912.49 : 2,869.15 = 614.87 : x
  2. Step 2: Convert to fraction form
    1,912.49/2,869.15 = 614.87/x
  3. Step 3: Cross multiply
    1,912.49x = 2,869.15 × 614.87
  4. Step 4: Simplify right side
    1,912.49x = 1,764,154.26
  5. Step 5: Solve for x
    x = 1,764,154.26/1,912.49
  6. Step 6: Final answer
    x = 922.44

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1.5x scale

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.