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Finding the Fourth Proportional to 8,399.58, 11,588.31 and 8,386.62

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Solution

The fourth proportional to 8,399.58, 11,588.31 and 8,386.62 is: 11,570.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,399.58 : 11,588.31 = 8,386.62 : x
  2. Step 2: Convert to fraction form
    8,399.58/11,588.31 = 8,386.62/x
  3. Step 3: Cross multiply
    8,399.58x = 11,588.31 × 8,386.62
  4. Step 4: Simplify right side
    8,399.58x = 97,186,752.41
  5. Step 5: Solve for x
    x = 97,186,752.41/8,399.58
  6. Step 6: Final answer
    x = 11,570.43

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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.