Home / 2,799.99-3,864.71-1,621.74

Finding the Fourth Proportional to 2,799.99, 3,864.71 and 1,621.74

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Solution

The fourth proportional to 2,799.99, 3,864.71 and 1,621.74 is: 2,238.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,799.99 : 3,864.71 = 1,621.74 : x
  2. Step 2: Convert to fraction form
    2,799.99/3,864.71 = 1,621.74/x
  3. Step 3: Cross multiply
    2,799.99x = 3,864.71 × 1,621.74
  4. Step 4: Simplify right side
    2,799.99x = 6,267,554.80
  5. Step 5: Solve for x
    x = 6,267,554.80/2,799.99
  6. Step 6: Final answer
    x = 2,238.42

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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.