Home / 3,100.48-4,272.36-2,881.76

Finding the Fourth Proportional to 3,100.48, 4,272.36 and 2,881.76

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Solution

The fourth proportional to 3,100.48, 4,272.36 and 2,881.76 is: 3,970.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,100.48 : 4,272.36 = 2,881.76 : x
  2. Step 2: Convert to fraction form
    3,100.48/4,272.36 = 2,881.76/x
  3. Step 3: Cross multiply
    3,100.48x = 4,272.36 × 2,881.76
  4. Step 4: Simplify right side
    3,100.48x = 12,311,916.15
  5. Step 5: Solve for x
    x = 12,311,916.15/3,100.48
  6. Step 6: Final answer
    x = 3,970.97

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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.