Home / 8,281.12-12,417.84-4,819.36

Finding the Fourth Proportional to 8,281.12, 12,417.84 and 4,819.36

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Solution

The fourth proportional to 8,281.12, 12,417.84 and 4,819.36 is: 7,226.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,281.12 : 12,417.84 = 4,819.36 : x
  2. Step 2: Convert to fraction form
    8,281.12/12,417.84 = 4,819.36/x
  3. Step 3: Cross multiply
    8,281.12x = 12,417.84 × 4,819.36
  4. Step 4: Simplify right side
    8,281.12x = 59,846,041.38
  5. Step 5: Solve for x
    x = 59,846,041.38/8,281.12
  6. Step 6: Final answer
    x = 7,226.81

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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.