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Finding the Fourth Proportional to 8,685.73, 13,025.70 and 2,840.98

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Solution

The fourth proportional to 8,685.73, 13,025.70 and 2,840.98 is: 4,260.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,685.73 : 13,025.70 = 2,840.98 : x
  2. Step 2: Convert to fraction form
    8,685.73/13,025.70 = 2,840.98/x
  3. Step 3: Cross multiply
    8,685.73x = 13,025.70 × 2,840.98
  4. Step 4: Simplify right side
    8,685.73x = 37,005,753.19
  5. Step 5: Solve for x
    x = 37,005,753.19/8,685.73
  6. Step 6: Final answer
    x = 4,260.52

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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.