Home / 2,971.68-4,100.24-1,910

Finding the Fourth Proportional to 2,971.68, 4,100.24 and 1,910

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Solution

The fourth proportional to 2,971.68, 4,100.24 and 1,910 is: 2,635.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,971.68 : 4,100.24 = 1,910 : x
  2. Step 2: Convert to fraction form
    2,971.68/4,100.24 = 1,910/x
  3. Step 3: Cross multiply
    2,971.68x = 4,100.24 × 1,910
  4. Step 4: Simplify right side
    2,971.68x = 7,831,458.40
  5. Step 5: Solve for x
    x = 7,831,458.40/2,971.68
  6. Step 6: Final answer
    x = 2,635.36

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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.