Home / 3,902.02-5,384.78-2,309.76

Finding the Fourth Proportional to 3,902.02, 5,384.78 and 2,309.76

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Solution

The fourth proportional to 3,902.02, 5,384.78 and 2,309.76 is: 3,187.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,902.02 : 5,384.78 = 2,309.76 : x
  2. Step 2: Convert to fraction form
    3,902.02/5,384.78 = 2,309.76/x
  3. Step 3: Cross multiply
    3,902.02x = 5,384.78 × 2,309.76
  4. Step 4: Simplify right side
    3,902.02x = 12,437,549.45
  5. Step 5: Solve for x
    x = 12,437,549.45/3,902.02
  6. Step 6: Final answer
    x = 3,187.46

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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.