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Finding the Fourth Proportional to 8,707.97, 12,016.90 and 4,931.03

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Solution

The fourth proportional to 8,707.97, 12,016.90 and 4,931.03 is: 6,804.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,707.97 : 12,016.90 = 4,931.03 : x
  2. Step 2: Convert to fraction form
    8,707.97/12,016.90 = 4,931.03/x
  3. Step 3: Cross multiply
    8,707.97x = 12,016.90 × 4,931.03
  4. Step 4: Simplify right side
    8,707.97x = 59,255,694.41
  5. Step 5: Solve for x
    x = 59,255,694.41/8,707.97
  6. Step 6: Final answer
    x = 6,804.77

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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.