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Finding the Fourth Proportional to 8,387.51, 12,580.53 and 2,840.73

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Solution

The fourth proportional to 8,387.51, 12,580.53 and 2,840.73 is: 4,260.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,387.51 : 12,580.53 = 2,840.73 : x
  2. Step 2: Convert to fraction form
    8,387.51/12,580.53 = 2,840.73/x
  3. Step 3: Cross multiply
    8,387.51x = 12,580.53 × 2,840.73
  4. Step 4: Simplify right side
    8,387.51x = 35,737,888.99
  5. Step 5: Solve for x
    x = 35,737,888.99/8,387.51
  6. Step 6: Final answer
    x = 4,260.85

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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.