Home / 2,231.72-3,342.50-1,921.10

Finding the Fourth Proportional to 2,231.72, 3,342.50 and 1,921.10

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Solution

The fourth proportional to 2,231.72, 3,342.50 and 1,921.10 is: 2,877.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,231.72 : 3,342.50 = 1,921.10 : x
  2. Step 2: Convert to fraction form
    2,231.72/3,342.50 = 1,921.10/x
  3. Step 3: Cross multiply
    2,231.72x = 3,342.50 × 1,921.10
  4. Step 4: Simplify right side
    2,231.72x = 6,421,264.84
  5. Step 5: Solve for x
    x = 6,421,264.84/2,231.72
  6. Step 6: Final answer
    x = 2,877.28

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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.