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Finding the Fourth Proportional to 7,216.92, 9,927.90 and 6,316.92

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Solution

The fourth proportional to 7,216.92, 9,927.90 and 6,316.92 is: 8,689.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,216.92 : 9,927.90 = 6,316.92 : x
  2. Step 2: Convert to fraction form
    7,216.92/9,927.90 = 6,316.92/x
  3. Step 3: Cross multiply
    7,216.92x = 9,927.90 × 6,316.92
  4. Step 4: Simplify right side
    7,216.92x = 62,713,750.07
  5. Step 5: Solve for x
    x = 62,713,750.07/7,216.92
  6. Step 6: Final answer
    x = 8,689.82

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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.