Home / 1,439.40-2,148.27-1,266.60

Finding the Fourth Proportional to 1,439.40, 2,148.27 and 1,266.60

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Solution

The fourth proportional to 1,439.40, 2,148.27 and 1,266.60 is: 1,890.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439.40 : 2,148.27 = 1,266.60 : x
  2. Step 2: Convert to fraction form
    1,439.40/2,148.27 = 1,266.60/x
  3. Step 3: Cross multiply
    1,439.40x = 2,148.27 × 1,266.60
  4. Step 4: Simplify right side
    1,439.40x = 2,720,998.78
  5. Step 5: Solve for x
    x = 2,720,998.78/1,439.40
  6. Step 6: Final answer
    x = 1,890.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.