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Finding the Fourth Proportional to 8,664.03, 11,947.32 and 6,430.32

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Solution

The fourth proportional to 8,664.03, 11,947.32 and 6,430.32 is: 8,867.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,664.03 : 11,947.32 = 6,430.32 : x
  2. Step 2: Convert to fraction form
    8,664.03/11,947.32 = 6,430.32/x
  3. Step 3: Cross multiply
    8,664.03x = 11,947.32 × 6,430.32
  4. Step 4: Simplify right side
    8,664.03x = 76,825,090.74
  5. Step 5: Solve for x
    x = 76,825,090.74/8,664.03
  6. Step 6: Final answer
    x = 8,867.13

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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.