Home / 3,904.20-5,387.79-2,411.76

Finding the Fourth Proportional to 3,904.20, 5,387.79 and 2,411.76

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Solution

The fourth proportional to 3,904.20, 5,387.79 and 2,411.76 is: 3,328.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,904.20 : 5,387.79 = 2,411.76 : x
  2. Step 2: Convert to fraction form
    3,904.20/5,387.79 = 2,411.76/x
  3. Step 3: Cross multiply
    3,904.20x = 5,387.79 × 2,411.76
  4. Step 4: Simplify right side
    3,904.20x = 12,994,056.41
  5. Step 5: Solve for x
    x = 12,994,056.41/3,904.20
  6. Step 6: Final answer
    x = 3,328.23

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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.