Home / 3,718.76-5,130.24-2,391.96

Finding the Fourth Proportional to 3,718.76, 5,130.24 and 2,391.96

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Solution

The fourth proportional to 3,718.76, 5,130.24 and 2,391.96 is: 3,299.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,718.76 : 5,130.24 = 2,391.96 : x
  2. Step 2: Convert to fraction form
    3,718.76/5,130.24 = 2,391.96/x
  3. Step 3: Cross multiply
    3,718.76x = 5,130.24 × 2,391.96
  4. Step 4: Simplify right side
    3,718.76x = 12,271,328.87
  5. Step 5: Solve for x
    x = 12,271,328.87/3,718.76
  6. Step 6: Final answer
    x = 3,299.84

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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.