Home / 3,921.18-5,411.04-2,152.68

Finding the Fourth Proportional to 3,921.18, 5,411.04 and 2,152.68

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Solution

The fourth proportional to 3,921.18, 5,411.04 and 2,152.68 is: 2,970.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.18 : 5,411.04 = 2,152.68 : x
  2. Step 2: Convert to fraction form
    3,921.18/5,411.04 = 2,152.68/x
  3. Step 3: Cross multiply
    3,921.18x = 5,411.04 × 2,152.68
  4. Step 4: Simplify right side
    3,921.18x = 11,648,237.59
  5. Step 5: Solve for x
    x = 11,648,237.59/3,921.18
  6. Step 6: Final answer
    x = 2,970.59

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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.