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Finding the Fourth Proportional to 8,365.57, 12,549.52 and 2,820.50

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Solution

The fourth proportional to 8,365.57, 12,549.52 and 2,820.50 is: 4,231.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,365.57 : 12,549.52 = 2,820.50 : x
  2. Step 2: Convert to fraction form
    8,365.57/12,549.52 = 2,820.50/x
  3. Step 3: Cross multiply
    8,365.57x = 12,549.52 × 2,820.50
  4. Step 4: Simplify right side
    8,365.57x = 35,395,940.19
  5. Step 5: Solve for x
    x = 35,395,940.19/8,365.57
  6. Step 6: Final answer
    x = 4,231.14

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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.