Home / 2,996.20-4,130.88-2,208.88

Finding the Fourth Proportional to 2,996.20, 4,130.88 and 2,208.88

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Solution

The fourth proportional to 2,996.20, 4,130.88 and 2,208.88 is: 3,045.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,996.20 : 4,130.88 = 2,208.88 : x
  2. Step 2: Convert to fraction form
    2,996.20/4,130.88 = 2,208.88/x
  3. Step 3: Cross multiply
    2,996.20x = 4,130.88 × 2,208.88
  4. Step 4: Simplify right side
    2,996.20x = 9,124,618.21
  5. Step 5: Solve for x
    x = 9,124,618.21/2,996.20
  6. Step 6: Final answer
    x = 3,045.40

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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.