Home / 3,141.10-4,712.94-1,385.20

Finding the Fourth Proportional to 3,141.10, 4,712.94 and 1,385.20

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Solution

The fourth proportional to 3,141.10, 4,712.94 and 1,385.20 is: 2,078.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,141.10 : 4,712.94 = 1,385.20 : x
  2. Step 2: Convert to fraction form
    3,141.10/4,712.94 = 1,385.20/x
  3. Step 3: Cross multiply
    3,141.10x = 4,712.94 × 1,385.20
  4. Step 4: Simplify right side
    3,141.10x = 6,528,364.49
  5. Step 5: Solve for x
    x = 6,528,364.49/3,141.10
  6. Step 6: Final answer
    x = 2,078.37

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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.