Home / 8,386.34-12,579.95-2,146.41

Finding the Fourth Proportional to 8,386.34, 12,579.95 and 2,146.41

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Solution

The fourth proportional to 8,386.34, 12,579.95 and 2,146.41 is: 3,219.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,386.34 : 12,579.95 = 2,146.41 : x
  2. Step 2: Convert to fraction form
    8,386.34/12,579.95 = 2,146.41/x
  3. Step 3: Cross multiply
    8,386.34x = 12,579.95 × 2,146.41
  4. Step 4: Simplify right side
    8,386.34x = 27,001,719.75
  5. Step 5: Solve for x
    x = 27,001,719.75/8,386.34
  6. Step 6: Final answer
    x = 3,219.73

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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.