Home / 3,120.30-4,680.45-1,477.31

Finding the Fourth Proportional to 3,120.30, 4,680.45 and 1,477.31

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Solution

The fourth proportional to 3,120.30, 4,680.45 and 1,477.31 is: 2,215.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.30 : 4,680.45 = 1,477.31 : x
  2. Step 2: Convert to fraction form
    3,120.30/4,680.45 = 1,477.31/x
  3. Step 3: Cross multiply
    3,120.30x = 4,680.45 × 1,477.31
  4. Step 4: Simplify right side
    3,120.30x = 6,914,475.59
  5. Step 5: Solve for x
    x = 6,914,475.59/3,120.30
  6. Step 6: Final answer
    x = 2,215.97

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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.