Home / 2,740.79-3,782.00-1,621.77

Finding the Fourth Proportional to 2,740.79, 3,782.00 and 1,621.77

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Solution

The fourth proportional to 2,740.79, 3,782.00 and 1,621.77 is: 2,237.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,740.79 : 3,782.00 = 1,621.77 : x
  2. Step 2: Convert to fraction form
    2,740.79/3,782.00 = 1,621.77/x
  3. Step 3: Cross multiply
    2,740.79x = 3,782.00 × 1,621.77
  4. Step 4: Simplify right side
    2,740.79x = 6,133,543.25
  5. Step 5: Solve for x
    x = 6,133,543.25/2,740.79
  6. Step 6: Final answer
    x = 2,237.88

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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.