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Finding the Fourth Proportional to 8,975.91, 12,386.12 and 4,996.69

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Solution

The fourth proportional to 8,975.91, 12,386.12 and 4,996.69 is: 6,895.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,975.91 : 12,386.12 = 4,996.69 : x
  2. Step 2: Convert to fraction form
    8,975.91/12,386.12 = 4,996.69/x
  3. Step 3: Cross multiply
    8,975.91x = 12,386.12 × 4,996.69
  4. Step 4: Simplify right side
    8,975.91x = 61,889,545.99
  5. Step 5: Solve for x
    x = 61,889,545.99/8,975.91
  6. Step 6: Final answer
    x = 6,895.07

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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.