Home / 6,478.10-9,719.55-2,585.30

Finding the Fourth Proportional to 6,478.10, 9,719.55 and 2,585.30

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Solution

The fourth proportional to 6,478.10, 9,719.55 and 2,585.30 is: 3,878.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,478.10 : 9,719.55 = 2,585.30 : x
  2. Step 2: Convert to fraction form
    6,478.10/9,719.55 = 2,585.30/x
  3. Step 3: Cross multiply
    6,478.10x = 9,719.55 × 2,585.30
  4. Step 4: Simplify right side
    6,478.10x = 25,127,952.62
  5. Step 5: Solve for x
    x = 25,127,952.62/6,478.10
  6. Step 6: Final answer
    x = 3,878.91

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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.