Home / 2,740.60-3,782.29-1,621.90

Finding the Fourth Proportional to 2,740.60, 3,782.29 and 1,621.90

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Solution

The fourth proportional to 2,740.60, 3,782.29 and 1,621.90 is: 2,238.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,740.60 : 3,782.29 = 1,621.90 : x
  2. Step 2: Convert to fraction form
    2,740.60/3,782.29 = 1,621.90/x
  3. Step 3: Cross multiply
    2,740.60x = 3,782.29 × 1,621.90
  4. Step 4: Simplify right side
    2,740.60x = 6,134,496.15
  5. Step 5: Solve for x
    x = 6,134,496.15/2,740.60
  6. Step 6: Final answer
    x = 2,238.38

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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.