Home / 7,812.25-10,779.99-4,625.61

Finding the Fourth Proportional to 7,812.25, 10,779.99 and 4,625.61

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Solution

The fourth proportional to 7,812.25, 10,779.99 and 4,625.61 is: 6,382.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,812.25 : 10,779.99 = 4,625.61 : x
  2. Step 2: Convert to fraction form
    7,812.25/10,779.99 = 4,625.61/x
  3. Step 3: Cross multiply
    7,812.25x = 10,779.99 × 4,625.61
  4. Step 4: Simplify right side
    7,812.25x = 49,863,971.77
  5. Step 5: Solve for x
    x = 49,863,971.77/7,812.25
  6. Step 6: Final answer
    x = 6,382.79

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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.