Home / 3,127.85-4,694.10-1,280.24

Finding the Fourth Proportional to 3,127.85, 4,694.10 and 1,280.24

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Solution

The fourth proportional to 3,127.85, 4,694.10 and 1,280.24 is: 1,921.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,127.85 : 4,694.10 = 1,280.24 : x
  2. Step 2: Convert to fraction form
    3,127.85/4,694.10 = 1,280.24/x
  3. Step 3: Cross multiply
    3,127.85x = 4,694.10 × 1,280.24
  4. Step 4: Simplify right side
    3,127.85x = 6,009,551.11
  5. Step 5: Solve for x
    x = 6,009,551.11/3,127.85
  6. Step 6: Final answer
    x = 1,921.31

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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.