Home / 2,008.78-2,771.70-1,124.40

Finding the Fourth Proportional to 2,008.78, 2,771.70 and 1,124.40

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Solution

The fourth proportional to 2,008.78, 2,771.70 and 1,124.40 is: 1,551.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,008.78 : 2,771.70 = 1,124.40 : x
  2. Step 2: Convert to fraction form
    2,008.78/2,771.70 = 1,124.40/x
  3. Step 3: Cross multiply
    2,008.78x = 2,771.70 × 1,124.40
  4. Step 4: Simplify right side
    2,008.78x = 3,116,505.66
  5. Step 5: Solve for x
    x = 3,116,505.66/2,008.78
  6. Step 6: Final answer
    x = 1,551.44

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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.