Home / 7,821.42-10,803.15-6,331.02

Finding the Fourth Proportional to 7,821.42, 10,803.15 and 6,331.02

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Solution

The fourth proportional to 7,821.42, 10,803.15 and 6,331.02 is: 8,744.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,821.42 : 10,803.15 = 6,331.02 : x
  2. Step 2: Convert to fraction form
    7,821.42/10,803.15 = 6,331.02/x
  3. Step 3: Cross multiply
    7,821.42x = 10,803.15 × 6,331.02
  4. Step 4: Simplify right side
    7,821.42x = 68,394,958.71
  5. Step 5: Solve for x
    x = 68,394,958.71/7,821.42
  6. Step 6: Final answer
    x = 8,744.57

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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.