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Finding the Fourth Proportional to 8,760, 12,088.80 and 5,970.36

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Solution

The fourth proportional to 8,760, 12,088.80 and 5,970.36 is: 8,239.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,760 : 12,088.80 = 5,970.36 : x
  2. Step 2: Convert to fraction form
    8,760/12,088.80 = 5,970.36/x
  3. Step 3: Cross multiply
    8,760x = 12,088.80 × 5,970.36
  4. Step 4: Simplify right side
    8,760x = 72,174,487.97
  5. Step 5: Solve for x
    x = 72,174,487.97/8,760
  6. Step 6: Final answer
    x = 8,239.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.