Home / 1,378.22-2,064.92-1,148.59

Finding the Fourth Proportional to 1,378.22, 2,064.92 and 1,148.59

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Solution

The fourth proportional to 1,378.22, 2,064.92 and 1,148.59 is: 1,720.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378.22 : 2,064.92 = 1,148.59 : x
  2. Step 2: Convert to fraction form
    1,378.22/2,064.92 = 1,148.59/x
  3. Step 3: Cross multiply
    1,378.22x = 2,064.92 × 1,148.59
  4. Step 4: Simplify right side
    1,378.22x = 2,371,739.01
  5. Step 5: Solve for x
    x = 2,371,739.01/1,378.22
  6. Step 6: Final answer
    x = 1,720.87

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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.