Home / 6,460.38-9,690.39-2,078.10

Finding the Fourth Proportional to 6,460.38, 9,690.39 and 2,078.10

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Solution

The fourth proportional to 6,460.38, 9,690.39 and 2,078.10 is: 3,117.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,460.38 : 9,690.39 = 2,078.10 : x
  2. Step 2: Convert to fraction form
    6,460.38/9,690.39 = 2,078.10/x
  3. Step 3: Cross multiply
    6,460.38x = 9,690.39 × 2,078.10
  4. Step 4: Simplify right side
    6,460.38x = 20,137,599.46
  5. Step 5: Solve for x
    x = 20,137,599.46/6,460.38
  6. Step 6: Final answer
    x = 3,117.09

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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.