Home / 4,812.78-6,641.58-2,688.17

Finding the Fourth Proportional to 4,812.78, 6,641.58 and 2,688.17

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Solution

The fourth proportional to 4,812.78, 6,641.58 and 2,688.17 is: 3,709.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,812.78 : 6,641.58 = 2,688.17 : x
  2. Step 2: Convert to fraction form
    4,812.78/6,641.58 = 2,688.17/x
  3. Step 3: Cross multiply
    4,812.78x = 6,641.58 × 2,688.17
  4. Step 4: Simplify right side
    4,812.78x = 17,853,734.58
  5. Step 5: Solve for x
    x = 17,853,734.58/4,812.78
  6. Step 6: Final answer
    x = 3,709.65

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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.