Home / 8,459.31-12,688.65-2,219.27

Finding the Fourth Proportional to 8,459.31, 12,688.65 and 2,219.27

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Solution

The fourth proportional to 8,459.31, 12,688.65 and 2,219.27 is: 3,328.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,459.31 : 12,688.65 = 2,219.27 : x
  2. Step 2: Convert to fraction form
    8,459.31/12,688.65 = 2,219.27/x
  3. Step 3: Cross multiply
    8,459.31x = 12,688.65 × 2,219.27
  4. Step 4: Simplify right side
    8,459.31x = 28,159,476.84
  5. Step 5: Solve for x
    x = 28,159,476.84/8,459.31
  6. Step 6: Final answer
    x = 3,328.81

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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.