Home / 3,423.31-4,724.09-1,931.21

Finding the Fourth Proportional to 3,423.31, 4,724.09 and 1,931.21

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Solution

The fourth proportional to 3,423.31, 4,724.09 and 1,931.21 is: 2,665.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,423.31 : 4,724.09 = 1,931.21 : x
  2. Step 2: Convert to fraction form
    3,423.31/4,724.09 = 1,931.21/x
  3. Step 3: Cross multiply
    3,423.31x = 4,724.09 × 1,931.21
  4. Step 4: Simplify right side
    3,423.31x = 9,123,200.19
  5. Step 5: Solve for x
    x = 9,123,200.19/3,423.31
  6. Step 6: Final answer
    x = 2,665.03

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1.5x scale

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.