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Finding the Fourth Proportional to 7,018.72, 10,512.72 and 4,276.96

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Solution

The fourth proportional to 7,018.72, 10,512.72 and 4,276.96 is: 6,406.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,018.72 : 10,512.72 = 4,276.96 : x
  2. Step 2: Convert to fraction form
    7,018.72/10,512.72 = 4,276.96/x
  3. Step 3: Cross multiply
    7,018.72x = 10,512.72 × 4,276.96
  4. Step 4: Simplify right side
    7,018.72x = 44,962,482.93
  5. Step 5: Solve for x
    x = 44,962,482.93/7,018.72
  6. Step 6: Final answer
    x = 6,406.08

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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.