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Finding the Fourth Proportional to 8,707.56, 12,016.34 and 4,931.48

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Solution

The fourth proportional to 8,707.56, 12,016.34 and 4,931.48 is: 6,805.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,707.56 : 12,016.34 = 4,931.48 : x
  2. Step 2: Convert to fraction form
    8,707.56/12,016.34 = 4,931.48/x
  3. Step 3: Cross multiply
    8,707.56x = 12,016.34 × 4,931.48
  4. Step 4: Simplify right side
    8,707.56x = 59,258,340.38
  5. Step 5: Solve for x
    x = 59,258,340.38/8,707.56
  6. Step 6: Final answer
    x = 6,805.39

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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.