Home / 3,008.90-4,155.12-2,845.28

Finding the Fourth Proportional to 3,008.90, 4,155.12 and 2,845.28

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Solution

The fourth proportional to 3,008.90, 4,155.12 and 2,845.28 is: 3,929.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,008.90 : 4,155.12 = 2,845.28 : x
  2. Step 2: Convert to fraction form
    3,008.90/4,155.12 = 2,845.28/x
  3. Step 3: Cross multiply
    3,008.90x = 4,155.12 × 2,845.28
  4. Step 4: Simplify right side
    3,008.90x = 11,822,479.83
  5. Step 5: Solve for x
    x = 11,822,479.83/3,008.90
  6. Step 6: Final answer
    x = 3,929.17

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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.