Home / 7,873.18-10,864.80-4,515.78

Finding the Fourth Proportional to 7,873.18, 10,864.80 and 4,515.78

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Solution

The fourth proportional to 7,873.18, 10,864.80 and 4,515.78 is: 6,231.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,873.18 : 10,864.80 = 4,515.78 : x
  2. Step 2: Convert to fraction form
    7,873.18/10,864.80 = 4,515.78/x
  3. Step 3: Cross multiply
    7,873.18x = 10,864.80 × 4,515.78
  4. Step 4: Simplify right side
    7,873.18x = 49,063,087.29
  5. Step 5: Solve for x
    x = 49,063,087.29/7,873.18
  6. Step 6: Final answer
    x = 6,231.68

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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.