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Finding the Fourth Proportional to 7,578.74, 11,368.12 and 2,958.50

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Solution

The fourth proportional to 7,578.74, 11,368.12 and 2,958.50 is: 4,437.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,578.74 : 11,368.12 = 2,958.50 : x
  2. Step 2: Convert to fraction form
    7,578.74/11,368.12 = 2,958.50/x
  3. Step 3: Cross multiply
    7,578.74x = 11,368.12 × 2,958.50
  4. Step 4: Simplify right side
    7,578.74x = 33,632,583.02
  5. Step 5: Solve for x
    x = 33,632,583.02/7,578.74
  6. Step 6: Final answer
    x = 4,437.75

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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.