Home / 6,313.80-8,720.70-4,632.78

Finding the Fourth Proportional to 6,313.80, 8,720.70 and 4,632.78

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Solution

The fourth proportional to 6,313.80, 8,720.70 and 4,632.78 is: 6,398.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,313.80 : 8,720.70 = 4,632.78 : x
  2. Step 2: Convert to fraction form
    6,313.80/8,720.70 = 4,632.78/x
  3. Step 3: Cross multiply
    6,313.80x = 8,720.70 × 4,632.78
  4. Step 4: Simplify right side
    6,313.80x = 40,401,084.55
  5. Step 5: Solve for x
    x = 40,401,084.55/6,313.80
  6. Step 6: Final answer
    x = 6,398.85

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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.