Home / 8,688.54-13,000.44-5,180.46

Finding the Fourth Proportional to 8,688.54, 13,000.44 and 5,180.46

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Solution

The fourth proportional to 8,688.54, 13,000.44 and 5,180.46 is: 7,751.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,688.54 : 13,000.44 = 5,180.46 : x
  2. Step 2: Convert to fraction form
    8,688.54/13,000.44 = 5,180.46/x
  3. Step 3: Cross multiply
    8,688.54x = 13,000.44 × 5,180.46
  4. Step 4: Simplify right side
    8,688.54x = 67,348,259.40
  5. Step 5: Solve for x
    x = 67,348,259.40/8,688.54
  6. Step 6: Final answer
    x = 7,751.39

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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.