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Finding the Fourth Proportional to 9,187.29, 12,678.54 and 4,995.54

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Solution

The fourth proportional to 9,187.29, 12,678.54 and 4,995.54 is: 6,893.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,187.29 : 12,678.54 = 4,995.54 : x
  2. Step 2: Convert to fraction form
    9,187.29/12,678.54 = 4,995.54/x
  3. Step 3: Cross multiply
    9,187.29x = 12,678.54 × 4,995.54
  4. Step 4: Simplify right side
    9,187.29x = 63,336,153.71
  5. Step 5: Solve for x
    x = 63,336,153.71/9,187.29
  6. Step 6: Final answer
    x = 6,893.89

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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.