Home / 9,318.56-12,856.47-6,329.21

Finding the Fourth Proportional to 9,318.56, 12,856.47 and 6,329.21

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Solution

The fourth proportional to 9,318.56, 12,856.47 and 6,329.21 is: 8,732.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,318.56 : 12,856.47 = 6,329.21 : x
  2. Step 2: Convert to fraction form
    9,318.56/12,856.47 = 6,329.21/x
  3. Step 3: Cross multiply
    9,318.56x = 12,856.47 × 6,329.21
  4. Step 4: Simplify right side
    9,318.56x = 81,371,298.49
  5. Step 5: Solve for x
    x = 81,371,298.49/9,318.56
  6. Step 6: Final answer
    x = 8,732.18

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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.