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Finding the Fourth Proportional to 9,211.56, 12,710.16 and 6,374.52

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Solution

The fourth proportional to 9,211.56, 12,710.16 and 6,374.52 is: 8,795.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,211.56 : 12,710.16 = 6,374.52 : x
  2. Step 2: Convert to fraction form
    9,211.56/12,710.16 = 6,374.52/x
  3. Step 3: Cross multiply
    9,211.56x = 12,710.16 × 6,374.52
  4. Step 4: Simplify right side
    9,211.56x = 81,021,169.12
  5. Step 5: Solve for x
    x = 81,021,169.12/9,211.56
  6. Step 6: Final answer
    x = 8,795.60

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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.