Home / 3,994.26-5,510.58-2,421.78

Finding the Fourth Proportional to 3,994.26, 5,510.58 and 2,421.78

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Solution

The fourth proportional to 3,994.26, 5,510.58 and 2,421.78 is: 3,341.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,994.26 : 5,510.58 = 2,421.78 : x
  2. Step 2: Convert to fraction form
    3,994.26/5,510.58 = 2,421.78/x
  3. Step 3: Cross multiply
    3,994.26x = 5,510.58 × 2,421.78
  4. Step 4: Simplify right side
    3,994.26x = 13,345,412.43
  5. Step 5: Solve for x
    x = 13,345,412.43/3,994.26
  6. Step 6: Final answer
    x = 3,341.15

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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.