Home / 6,460.20-9,689.40-2,078.10

Finding the Fourth Proportional to 6,460.20, 9,689.40 and 2,078.10

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Solution

The fourth proportional to 6,460.20, 9,689.40 and 2,078.10 is: 3,116.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,460.20 : 9,689.40 = 2,078.10 : x
  2. Step 2: Convert to fraction form
    6,460.20/9,689.40 = 2,078.10/x
  3. Step 3: Cross multiply
    6,460.20x = 9,689.40 × 2,078.10
  4. Step 4: Simplify right side
    6,460.20x = 20,135,542.14
  5. Step 5: Solve for x
    x = 20,135,542.14/6,460.20
  6. Step 6: Final answer
    x = 3,116.86

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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.