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Finding the Fourth Proportional to 8,707.98, 12,016.10 and 4,931.40

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Solution

The fourth proportional to 8,707.98, 12,016.10 and 4,931.40 is: 6,804.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,707.98 : 12,016.10 = 4,931.40 : x
  2. Step 2: Convert to fraction form
    8,707.98/12,016.10 = 4,931.40/x
  3. Step 3: Cross multiply
    8,707.98x = 12,016.10 × 4,931.40
  4. Step 4: Simplify right side
    8,707.98x = 59,256,195.54
  5. Step 5: Solve for x
    x = 59,256,195.54/8,707.98
  6. Step 6: Final answer
    x = 6,804.82

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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.