Home / 3,953.10-5,455.20-2,184.78

Finding the Fourth Proportional to 3,953.10, 5,455.20 and 2,184.78

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Solution

The fourth proportional to 3,953.10, 5,455.20 and 2,184.78 is: 3,014.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,953.10 : 5,455.20 = 2,184.78 : x
  2. Step 2: Convert to fraction form
    3,953.10/5,455.20 = 2,184.78/x
  3. Step 3: Cross multiply
    3,953.10x = 5,455.20 × 2,184.78
  4. Step 4: Simplify right side
    3,953.10x = 11,918,411.86
  5. Step 5: Solve for x
    x = 11,918,411.86/3,953.10
  6. Step 6: Final answer
    x = 3,014.95

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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.