Home / 3,126.81-4,688.78-1,177.77

Finding the Fourth Proportional to 3,126.81, 4,688.78 and 1,177.77

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Solution

The fourth proportional to 3,126.81, 4,688.78 and 1,177.77 is: 1,766.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.81 : 4,688.78 = 1,177.77 : x
  2. Step 2: Convert to fraction form
    3,126.81/4,688.78 = 1,177.77/x
  3. Step 3: Cross multiply
    3,126.81x = 4,688.78 × 1,177.77
  4. Step 4: Simplify right side
    3,126.81x = 5,522,298.53
  5. Step 5: Solve for x
    x = 5,522,298.53/3,126.81
  6. Step 6: Final answer
    x = 1,766.11

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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.