Home / 2,739.10-3,780.11-1,560.54

Finding the Fourth Proportional to 2,739.10, 3,780.11 and 1,560.54

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Solution

The fourth proportional to 2,739.10, 3,780.11 and 1,560.54 is: 2,153.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,739.10 : 3,780.11 = 1,560.54 : x
  2. Step 2: Convert to fraction form
    2,739.10/3,780.11 = 1,560.54/x
  3. Step 3: Cross multiply
    2,739.10x = 3,780.11 × 1,560.54
  4. Step 4: Simplify right side
    2,739.10x = 5,899,012.86
  5. Step 5: Solve for x
    x = 5,899,012.86/2,739.10
  6. Step 6: Final answer
    x = 2,153.63

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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.