Home / 1,550.80-2,139.63-1,019.53

Finding the Fourth Proportional to 1,550.80, 2,139.63 and 1,019.53

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Solution

The fourth proportional to 1,550.80, 2,139.63 and 1,019.53 is: 1,406.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,550.80 : 2,139.63 = 1,019.53 : x
  2. Step 2: Convert to fraction form
    1,550.80/2,139.63 = 1,019.53/x
  3. Step 3: Cross multiply
    1,550.80x = 2,139.63 × 1,019.53
  4. Step 4: Simplify right side
    1,550.80x = 2,181,416.97
  5. Step 5: Solve for x
    x = 2,181,416.97/1,550.80
  6. Step 6: Final answer
    x = 1,406.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.