Home / 4,101.81-6,155.85-2,129.05

Finding the Fourth Proportional to 4,101.81, 6,155.85 and 2,129.05

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Solution

The fourth proportional to 4,101.81, 6,155.85 and 2,129.05 is: 3,195.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,101.81 : 6,155.85 = 2,129.05 : x
  2. Step 2: Convert to fraction form
    4,101.81/6,155.85 = 2,129.05/x
  3. Step 3: Cross multiply
    4,101.81x = 6,155.85 × 2,129.05
  4. Step 4: Simplify right side
    4,101.81x = 13,106,127.83
  5. Step 5: Solve for x
    x = 13,106,127.83/4,101.81
  6. Step 6: Final answer
    x = 3,195.21

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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.