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Finding the Fourth Proportional to 8,070.56, 12,114.32 and 7,152

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Solution

The fourth proportional to 8,070.56, 12,114.32 and 7,152 is: 10,735.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,070.56 : 12,114.32 = 7,152 : x
  2. Step 2: Convert to fraction form
    8,070.56/12,114.32 = 7,152/x
  3. Step 3: Cross multiply
    8,070.56x = 12,114.32 × 7,152
  4. Step 4: Simplify right side
    8,070.56x = 86,641,616.64
  5. Step 5: Solve for x
    x = 86,641,616.64/8,070.56
  6. Step 6: Final answer
    x = 10,735.51

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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.