Home / 9,285.54-12,812.20-5,305.87

Finding the Fourth Proportional to 9,285.54, 12,812.20 and 5,305.87

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Solution

The fourth proportional to 9,285.54, 12,812.20 and 5,305.87 is: 7,321.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,285.54 : 12,812.20 = 5,305.87 : x
  2. Step 2: Convert to fraction form
    9,285.54/12,812.20 = 5,305.87/x
  3. Step 3: Cross multiply
    9,285.54x = 12,812.20 × 5,305.87
  4. Step 4: Simplify right side
    9,285.54x = 67,979,867.61
  5. Step 5: Solve for x
    x = 67,979,867.61/9,285.54
  6. Step 6: Final answer
    x = 7,321.05

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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.