Home / 3,391.47-4,680.30-1,899.31

Finding the Fourth Proportional to 3,391.47, 4,680.30 and 1,899.31

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Solution

The fourth proportional to 3,391.47, 4,680.30 and 1,899.31 is: 2,621.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,391.47 : 4,680.30 = 1,899.31 : x
  2. Step 2: Convert to fraction form
    3,391.47/4,680.30 = 1,899.31/x
  3. Step 3: Cross multiply
    3,391.47x = 4,680.30 × 1,899.31
  4. Step 4: Simplify right side
    3,391.47x = 8,889,340.59
  5. Step 5: Solve for x
    x = 8,889,340.59/3,391.47
  6. Step 6: Final answer
    x = 2,621.09

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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.