Home / 3,395.79-5,090.11-1,931.78

Finding the Fourth Proportional to 3,395.79, 5,090.11 and 1,931.78

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Solution

The fourth proportional to 3,395.79, 5,090.11 and 1,931.78 is: 2,895.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,395.79 : 5,090.11 = 1,931.78 : x
  2. Step 2: Convert to fraction form
    3,395.79/5,090.11 = 1,931.78/x
  3. Step 3: Cross multiply
    3,395.79x = 5,090.11 × 1,931.78
  4. Step 4: Simplify right side
    3,395.79x = 9,832,980.59
  5. Step 5: Solve for x
    x = 9,832,980.59/3,395.79
  6. Step 6: Final answer
    x = 2,895.64

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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.