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Finding the Fourth Proportional to 9,284.75, 12,813 and 5,558.75

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Solution

The fourth proportional to 9,284.75, 12,813 and 5,558.75 is: 7,671.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,284.75 : 12,813 = 5,558.75 : x
  2. Step 2: Convert to fraction form
    9,284.75/12,813 = 5,558.75/x
  3. Step 3: Cross multiply
    9,284.75x = 12,813 × 5,558.75
  4. Step 4: Simplify right side
    9,284.75x = 71,224,263.75
  5. Step 5: Solve for x
    x = 71,224,263.75/9,284.75
  6. Step 6: Final answer
    x = 7,671.10

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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.