Home / 4,811.64-6,639.78-3,107.16

Finding the Fourth Proportional to 4,811.64, 6,639.78 and 3,107.16

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Solution

The fourth proportional to 4,811.64, 6,639.78 and 3,107.16 is: 4,287.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,811.64 : 6,639.78 = 3,107.16 : x
  2. Step 2: Convert to fraction form
    4,811.64/6,639.78 = 3,107.16/x
  3. Step 3: Cross multiply
    4,811.64x = 6,639.78 × 3,107.16
  4. Step 4: Simplify right side
    4,811.64x = 20,630,858.82
  5. Step 5: Solve for x
    x = 20,630,858.82/4,811.64
  6. Step 6: Final answer
    x = 4,287.70

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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.