Home / 1,912.76-2,869.55-614.22

Finding the Fourth Proportional to 1,912.76, 2,869.55 and 614.22

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Solution

The fourth proportional to 1,912.76, 2,869.55 and 614.22 is: 921.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,912.76 : 2,869.55 = 614.22 : x
  2. Step 2: Convert to fraction form
    1,912.76/2,869.55 = 614.22/x
  3. Step 3: Cross multiply
    1,912.76x = 2,869.55 × 614.22
  4. Step 4: Simplify right side
    1,912.76x = 1,762,535.00
  5. Step 5: Solve for x
    x = 1,762,535.00/1,912.76
  6. Step 6: Final answer
    x = 921.46

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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.