Home / 2,911.50-4,019.70-2,247.12

Finding the Fourth Proportional to 2,911.50, 4,019.70 and 2,247.12

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Solution

The fourth proportional to 2,911.50, 4,019.70 and 2,247.12 is: 3,102.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,911.50 : 4,019.70 = 2,247.12 : x
  2. Step 2: Convert to fraction form
    2,911.50/4,019.70 = 2,247.12/x
  3. Step 3: Cross multiply
    2,911.50x = 4,019.70 × 2,247.12
  4. Step 4: Simplify right side
    2,911.50x = 9,032,748.26
  5. Step 5: Solve for x
    x = 9,032,748.26/2,911.50
  6. Step 6: Final answer
    x = 3,102.44

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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.