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Finding the Fourth Proportional to 7,011.71, 10,522.78 and 3,315.07

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Solution

The fourth proportional to 7,011.71, 10,522.78 and 3,315.07 is: 4,975.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,011.71 : 10,522.78 = 3,315.07 : x
  2. Step 2: Convert to fraction form
    7,011.71/10,522.78 = 3,315.07/x
  3. Step 3: Cross multiply
    7,011.71x = 10,522.78 × 3,315.07
  4. Step 4: Simplify right side
    7,011.71x = 34,883,757.16
  5. Step 5: Solve for x
    x = 34,883,757.16/7,011.71
  6. Step 6: Final answer
    x = 4,975.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.