Home / 4,689.36-6,468.12-3,120.12

Finding the Fourth Proportional to 4,689.36, 6,468.12 and 3,120.12

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Solution

The fourth proportional to 4,689.36, 6,468.12 and 3,120.12 is: 4,303.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,689.36 : 6,468.12 = 3,120.12 : x
  2. Step 2: Convert to fraction form
    4,689.36/6,468.12 = 3,120.12/x
  3. Step 3: Cross multiply
    4,689.36x = 6,468.12 × 3,120.12
  4. Step 4: Simplify right side
    4,689.36x = 20,181,310.57
  5. Step 5: Solve for x
    x = 20,181,310.57/4,689.36
  6. Step 6: Final answer
    x = 4,303.64

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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.