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Finding the Fourth Proportional to 8,671.16, 13,009.18 and 3,480.68

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Solution

The fourth proportional to 8,671.16, 13,009.18 and 3,480.68 is: 5,222.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,671.16 : 13,009.18 = 3,480.68 : x
  2. Step 2: Convert to fraction form
    8,671.16/13,009.18 = 3,480.68/x
  3. Step 3: Cross multiply
    8,671.16x = 13,009.18 × 3,480.68
  4. Step 4: Simplify right side
    8,671.16x = 45,280,792.64
  5. Step 5: Solve for x
    x = 45,280,792.64/8,671.16
  6. Step 6: Final answer
    x = 5,222.00

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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.