Home / 8,631.32-12,938.07-4,727.48

Finding the Fourth Proportional to 8,631.32, 12,938.07 and 4,727.48

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Solution

The fourth proportional to 8,631.32, 12,938.07 and 4,727.48 is: 7,086.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,631.32 : 12,938.07 = 4,727.48 : x
  2. Step 2: Convert to fraction form
    8,631.32/12,938.07 = 4,727.48/x
  3. Step 3: Cross multiply
    8,631.32x = 12,938.07 × 4,727.48
  4. Step 4: Simplify right side
    8,631.32x = 61,164,467.16
  5. Step 5: Solve for x
    x = 61,164,467.16/8,631.32
  6. Step 6: Final answer
    x = 7,086.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.