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Finding the Fourth Proportional to 8,339.77, 11,513.07 and 6,447.08

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Solution

The fourth proportional to 8,339.77, 11,513.07 and 6,447.08 is: 8,900.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,339.77 : 11,513.07 = 6,447.08 : x
  2. Step 2: Convert to fraction form
    8,339.77/11,513.07 = 6,447.08/x
  3. Step 3: Cross multiply
    8,339.77x = 11,513.07 × 6,447.08
  4. Step 4: Simplify right side
    8,339.77x = 74,225,683.34
  5. Step 5: Solve for x
    x = 74,225,683.34/8,339.77
  6. Step 6: Final answer
    x = 8,900.21

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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.