Home / 4,811.25-6,639.63-2,715.39

Finding the Fourth Proportional to 4,811.25, 6,639.63 and 2,715.39

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Solution

The fourth proportional to 4,811.25, 6,639.63 and 2,715.39 is: 3,747.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,811.25 : 6,639.63 = 2,715.39 : x
  2. Step 2: Convert to fraction form
    4,811.25/6,639.63 = 2,715.39/x
  3. Step 3: Cross multiply
    4,811.25x = 6,639.63 × 2,715.39
  4. Step 4: Simplify right side
    4,811.25x = 18,029,184.91
  5. Step 5: Solve for x
    x = 18,029,184.91/4,811.25
  6. Step 6: Final answer
    x = 3,747.30

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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.