Home / 2,770.80-4,155.39-1,039.02

Finding the Fourth Proportional to 2,770.80, 4,155.39 and 1,039.02

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Solution

The fourth proportional to 2,770.80, 4,155.39 and 1,039.02 is: 1,558.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,770.80 : 4,155.39 = 1,039.02 : x
  2. Step 2: Convert to fraction form
    2,770.80/4,155.39 = 1,039.02/x
  3. Step 3: Cross multiply
    2,770.80x = 4,155.39 × 1,039.02
  4. Step 4: Simplify right side
    2,770.80x = 4,317,533.32
  5. Step 5: Solve for x
    x = 4,317,533.32/2,770.80
  6. Step 6: Final answer
    x = 1,558.23

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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.