Home / 8,787.52-12,129.60-5,806

Finding the Fourth Proportional to 8,787.52, 12,129.60 and 5,806

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Solution

The fourth proportional to 8,787.52, 12,129.60 and 5,806 is: 8,014.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,787.52 : 12,129.60 = 5,806 : x
  2. Step 2: Convert to fraction form
    8,787.52/12,129.60 = 5,806/x
  3. Step 3: Cross multiply
    8,787.52x = 12,129.60 × 5,806
  4. Step 4: Simplify right side
    8,787.52x = 70,424,457.60
  5. Step 5: Solve for x
    x = 70,424,457.60/8,787.52
  6. Step 6: Final answer
    x = 8,014.14

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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.