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Finding the Fourth Proportional to 6,917.70, 10,376.55 and 6,291.30

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Solution

The fourth proportional to 6,917.70, 10,376.55 and 6,291.30 is: 9,436.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,917.70 : 10,376.55 = 6,291.30 : x
  2. Step 2: Convert to fraction form
    6,917.70/10,376.55 = 6,291.30/x
  3. Step 3: Cross multiply
    6,917.70x = 10,376.55 × 6,291.30
  4. Step 4: Simplify right side
    6,917.70x = 65,281,989.02
  5. Step 5: Solve for x
    x = 65,281,989.02/6,917.70
  6. Step 6: Final answer
    x = 9,436.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.