Home / 3,646.88-5,031.04-2,154.80

Finding the Fourth Proportional to 3,646.88, 5,031.04 and 2,154.80

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Solution

The fourth proportional to 3,646.88, 5,031.04 and 2,154.80 is: 2,972.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,646.88 : 5,031.04 = 2,154.80 : x
  2. Step 2: Convert to fraction form
    3,646.88/5,031.04 = 2,154.80/x
  3. Step 3: Cross multiply
    3,646.88x = 5,031.04 × 2,154.80
  4. Step 4: Simplify right side
    3,646.88x = 10,840,884.99
  5. Step 5: Solve for x
    x = 10,840,884.99/3,646.88
  6. Step 6: Final answer
    x = 2,972.65

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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.