Home / 4,811.78-6,639.49-2,715.50

Finding the Fourth Proportional to 4,811.78, 6,639.49 and 2,715.50

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Solution

The fourth proportional to 4,811.78, 6,639.49 and 2,715.50 is: 3,746.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,811.78 : 6,639.49 = 2,715.50 : x
  2. Step 2: Convert to fraction form
    4,811.78/6,639.49 = 2,715.50/x
  3. Step 3: Cross multiply
    4,811.78x = 6,639.49 × 2,715.50
  4. Step 4: Simplify right side
    4,811.78x = 18,029,535.10
  5. Step 5: Solve for x
    x = 18,029,535.10/4,811.78
  6. Step 6: Final answer
    x = 3,746.96

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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.