Home / 2,005.20-3,008.13-618.49

Finding the Fourth Proportional to 2,005.20, 3,008.13 and 618.49

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Solution

The fourth proportional to 2,005.20, 3,008.13 and 618.49 is: 927.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,005.20 : 3,008.13 = 618.49 : x
  2. Step 2: Convert to fraction form
    2,005.20/3,008.13 = 618.49/x
  3. Step 3: Cross multiply
    2,005.20x = 3,008.13 × 618.49
  4. Step 4: Simplify right side
    2,005.20x = 1,860,498.32
  5. Step 5: Solve for x
    x = 1,860,498.32/2,005.20
  6. Step 6: Final answer
    x = 927.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.