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Finding the Fourth Proportional to 9,280.75, 12,807.44 and 5,089

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Solution

The fourth proportional to 9,280.75, 12,807.44 and 5,089 is: 7,022.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,280.75 : 12,807.44 = 5,089 : x
  2. Step 2: Convert to fraction form
    9,280.75/12,807.44 = 5,089/x
  3. Step 3: Cross multiply
    9,280.75x = 12,807.44 × 5,089
  4. Step 4: Simplify right side
    9,280.75x = 65,177,062.16
  5. Step 5: Solve for x
    x = 65,177,062.16/9,280.75
  6. Step 6: Final answer
    x = 7,022.82

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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.