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Finding the Fourth Proportional to 7,685.53, 11,530.13 and 2,491.41

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Solution

The fourth proportional to 7,685.53, 11,530.13 and 2,491.41 is: 3,737.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,685.53 : 11,530.13 = 2,491.41 : x
  2. Step 2: Convert to fraction form
    7,685.53/11,530.13 = 2,491.41/x
  3. Step 3: Cross multiply
    7,685.53x = 11,530.13 × 2,491.41
  4. Step 4: Simplify right side
    7,685.53x = 28,726,281.18
  5. Step 5: Solve for x
    x = 28,726,281.18/7,685.53
  6. Step 6: Final answer
    x = 3,737.71

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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.