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Finding the Fourth Proportional to 6,318.49, 8,719.30 and 3,485.76

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Solution

The fourth proportional to 6,318.49, 8,719.30 and 3,485.76 is: 4,810.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,318.49 : 8,719.30 = 3,485.76 : x
  2. Step 2: Convert to fraction form
    6,318.49/8,719.30 = 3,485.76/x
  3. Step 3: Cross multiply
    6,318.49x = 8,719.30 × 3,485.76
  4. Step 4: Simplify right side
    6,318.49x = 30,393,363.74
  5. Step 5: Solve for x
    x = 30,393,363.74/6,318.49
  6. Step 6: Final answer
    x = 4,810.22

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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.