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Finding the Fourth Proportional to 7,709.72, 10,639.01 and 4,522.58

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Solution

The fourth proportional to 7,709.72, 10,639.01 and 4,522.58 is: 6,240.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,709.72 : 10,639.01 = 4,522.58 : x
  2. Step 2: Convert to fraction form
    7,709.72/10,639.01 = 4,522.58/x
  3. Step 3: Cross multiply
    7,709.72x = 10,639.01 × 4,522.58
  4. Step 4: Simplify right side
    7,709.72x = 48,115,698.04
  5. Step 5: Solve for x
    x = 48,115,698.04/7,709.72
  6. Step 6: Final answer
    x = 6,240.91

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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.