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Finding the Fourth Proportional to 7,967.16, 11,951.28 and 2,420.28

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Solution

The fourth proportional to 7,967.16, 11,951.28 and 2,420.28 is: 3,630.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,967.16 : 11,951.28 = 2,420.28 : x
  2. Step 2: Convert to fraction form
    7,967.16/11,951.28 = 2,420.28/x
  3. Step 3: Cross multiply
    7,967.16x = 11,951.28 × 2,420.28
  4. Step 4: Simplify right side
    7,967.16x = 28,925,443.96
  5. Step 5: Solve for x
    x = 28,925,443.96/7,967.16
  6. Step 6: Final answer
    x = 3,630.58

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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.