Home / 7,818.10-10,787.17-4,629.78

Finding the Fourth Proportional to 7,818.10, 10,787.17 and 4,629.78

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Solution

The fourth proportional to 7,818.10, 10,787.17 and 4,629.78 is: 6,388.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,818.10 : 10,787.17 = 4,629.78 : x
  2. Step 2: Convert to fraction form
    7,818.10/10,787.17 = 4,629.78/x
  3. Step 3: Cross multiply
    7,818.10x = 10,787.17 × 4,629.78
  4. Step 4: Simplify right side
    7,818.10x = 49,942,223.92
  5. Step 5: Solve for x
    x = 49,942,223.92/7,818.10
  6. Step 6: Final answer
    x = 6,388.03

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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.