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Finding the Fourth Proportional to 7,488, 11,225.66 and 5,015.25

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Solution

The fourth proportional to 7,488, 11,225.66 and 5,015.25 is: 7,518.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,488 : 11,225.66 = 5,015.25 : x
  2. Step 2: Convert to fraction form
    7,488/11,225.66 = 5,015.25/x
  3. Step 3: Cross multiply
    7,488x = 11,225.66 × 5,015.25
  4. Step 4: Simplify right side
    7,488x = 56,299,466.24
  5. Step 5: Solve for x
    x = 56,299,466.24/7,488
  6. Step 6: Final answer
    x = 7,518.63

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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.