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Finding the Fourth Proportional to 9,349.19, 12,918.98 and 8,893.61

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Solution

The fourth proportional to 9,349.19, 12,918.98 and 8,893.61 is: 12,289.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,349.19 : 12,918.98 = 8,893.61 : x
  2. Step 2: Convert to fraction form
    9,349.19/12,918.98 = 8,893.61/x
  3. Step 3: Cross multiply
    9,349.19x = 12,918.98 × 8,893.61
  4. Step 4: Simplify right side
    9,349.19x = 114,896,327.36
  5. Step 5: Solve for x
    x = 114,896,327.36/9,349.19
  6. Step 6: Final answer
    x = 12,289.45

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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.