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Finding the Fourth Proportional to 7,670.70, 11,497.50 and 2,988.50

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Solution

The fourth proportional to 7,670.70, 11,497.50 and 2,988.50 is: 4,479.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,670.70 : 11,497.50 = 2,988.50 : x
  2. Step 2: Convert to fraction form
    7,670.70/11,497.50 = 2,988.50/x
  3. Step 3: Cross multiply
    7,670.70x = 11,497.50 × 2,988.50
  4. Step 4: Simplify right side
    7,670.70x = 34,360,221.26
  5. Step 5: Solve for x
    x = 34,360,221.26/7,670.70
  6. Step 6: Final answer
    x = 4,479.41

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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.