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Finding the Fourth Proportional to 7,578.76, 11,368.18 and 2,648.38

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Solution

The fourth proportional to 7,578.76, 11,368.18 and 2,648.38 is: 3,972.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,578.76 : 11,368.18 = 2,648.38 : x
  2. Step 2: Convert to fraction form
    7,578.76/11,368.18 = 2,648.38/x
  3. Step 3: Cross multiply
    7,578.76x = 11,368.18 × 2,648.38
  4. Step 4: Simplify right side
    7,578.76x = 30,107,260.55
  5. Step 5: Solve for x
    x = 30,107,260.55/7,578.76
  6. Step 6: Final answer
    x = 3,972.58

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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.