Home / 3,107.28-4,660.89-916.02

Finding the Fourth Proportional to 3,107.28, 4,660.89 and 916.02

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Solution

The fourth proportional to 3,107.28, 4,660.89 and 916.02 is: 1,374.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,107.28 : 4,660.89 = 916.02 : x
  2. Step 2: Convert to fraction form
    3,107.28/4,660.89 = 916.02/x
  3. Step 3: Cross multiply
    3,107.28x = 4,660.89 × 916.02
  4. Step 4: Simplify right side
    3,107.28x = 4,269,468.46
  5. Step 5: Solve for x
    x = 4,269,468.46/3,107.28
  6. Step 6: Final answer
    x = 1,374.02

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1.5x scale

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.