Home / 1,378.04-2,069.76-1,327.28

Finding the Fourth Proportional to 1,378.04, 2,069.76 and 1,327.28

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Solution

The fourth proportional to 1,378.04, 2,069.76 and 1,327.28 is: 1,993.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378.04 : 2,069.76 = 1,327.28 : x
  2. Step 2: Convert to fraction form
    1,378.04/2,069.76 = 1,327.28/x
  3. Step 3: Cross multiply
    1,378.04x = 2,069.76 × 1,327.28
  4. Step 4: Simplify right side
    1,378.04x = 2,747,151.05
  5. Step 5: Solve for x
    x = 2,747,151.05/1,378.04
  6. Step 6: Final answer
    x = 1,993.52

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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.