Home / 7,812.22-10,780.86-4,455.04

Finding the Fourth Proportional to 7,812.22, 10,780.86 and 4,455.04

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Solution

The fourth proportional to 7,812.22, 10,780.86 and 4,455.04 is: 6,147.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,812.22 : 10,780.86 = 4,455.04 : x
  2. Step 2: Convert to fraction form
    7,812.22/10,780.86 = 4,455.04/x
  3. Step 3: Cross multiply
    7,812.22x = 10,780.86 × 4,455.04
  4. Step 4: Simplify right side
    7,812.22x = 48,029,162.53
  5. Step 5: Solve for x
    x = 48,029,162.53/7,812.22
  6. Step 6: Final answer
    x = 6,147.95

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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.