Home / 4,815.20-6,624.15-3,929.06

Finding the Fourth Proportional to 4,815.20, 6,624.15 and 3,929.06

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Solution

The fourth proportional to 4,815.20, 6,624.15 and 3,929.06 is: 5,405.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,815.20 : 6,624.15 = 3,929.06 : x
  2. Step 2: Convert to fraction form
    4,815.20/6,624.15 = 3,929.06/x
  3. Step 3: Cross multiply
    4,815.20x = 6,624.15 × 3,929.06
  4. Step 4: Simplify right side
    4,815.20x = 26,026,682.80
  5. Step 5: Solve for x
    x = 26,026,682.80/4,815.20
  6. Step 6: Final answer
    x = 5,405.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.