Home / 2,739.39-3,780.39-1,560.45

Finding the Fourth Proportional to 2,739.39, 3,780.39 and 1,560.45

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Solution

The fourth proportional to 2,739.39, 3,780.39 and 1,560.45 is: 2,153.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,739.39 : 3,780.39 = 1,560.45 : x
  2. Step 2: Convert to fraction form
    2,739.39/3,780.39 = 1,560.45/x
  3. Step 3: Cross multiply
    2,739.39x = 3,780.39 × 1,560.45
  4. Step 4: Simplify right side
    2,739.39x = 5,899,109.58
  5. Step 5: Solve for x
    x = 5,899,109.58/2,739.39
  6. Step 6: Final answer
    x = 2,153.44

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1.5x scale

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.