Home / 8,139.48-12,210.12-3,212.52

Finding the Fourth Proportional to 8,139.48, 12,210.12 and 3,212.52

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Solution

The fourth proportional to 8,139.48, 12,210.12 and 3,212.52 is: 4,819.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,139.48 : 12,210.12 = 3,212.52 : x
  2. Step 2: Convert to fraction form
    8,139.48/12,210.12 = 3,212.52/x
  3. Step 3: Cross multiply
    8,139.48x = 12,210.12 × 3,212.52
  4. Step 4: Simplify right side
    8,139.48x = 39,225,254.70
  5. Step 5: Solve for x
    x = 39,225,254.70/8,139.48
  6. Step 6: Final answer
    x = 4,819.14

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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.