Home / 2,921.40-4,401.63-2,644.11

Finding the Fourth Proportional to 2,921.40, 4,401.63 and 2,644.11

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Solution

The fourth proportional to 2,921.40, 4,401.63 and 2,644.11 is: 3,983.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.40 : 4,401.63 = 2,644.11 : x
  2. Step 2: Convert to fraction form
    2,921.40/4,401.63 = 2,644.11/x
  3. Step 3: Cross multiply
    2,921.40x = 4,401.63 × 2,644.11
  4. Step 4: Simplify right side
    2,921.40x = 11,638,393.90
  5. Step 5: Solve for x
    x = 11,638,393.90/2,921.40
  6. Step 6: Final answer
    x = 3,983.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.