Home / 3,904.37-5,390.63-2,311.53

Finding the Fourth Proportional to 3,904.37, 5,390.63 and 2,311.53

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Solution

The fourth proportional to 3,904.37, 5,390.63 and 2,311.53 is: 3,191.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,904.37 : 5,390.63 = 2,311.53 : x
  2. Step 2: Convert to fraction form
    3,904.37/5,390.63 = 2,311.53/x
  3. Step 3: Cross multiply
    3,904.37x = 5,390.63 × 2,311.53
  4. Step 4: Simplify right side
    3,904.37x = 12,460,591.41
  5. Step 5: Solve for x
    x = 12,460,591.41/3,904.37
  6. Step 6: Final answer
    x = 3,191.45

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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.