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Finding the Fourth Proportional to 7,696.40, 10,619.64 and 4,552.40

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Solution

The fourth proportional to 7,696.40, 10,619.64 and 4,552.40 is: 6,281.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,696.40 : 10,619.64 = 4,552.40 : x
  2. Step 2: Convert to fraction form
    7,696.40/10,619.64 = 4,552.40/x
  3. Step 3: Cross multiply
    7,696.40x = 10,619.64 × 4,552.40
  4. Step 4: Simplify right side
    7,696.40x = 48,344,849.14
  5. Step 5: Solve for x
    x = 48,344,849.14/7,696.40
  6. Step 6: Final answer
    x = 6,281.49

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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.