Home / 8,707.09-12,015.45-4,728.12

Finding the Fourth Proportional to 8,707.09, 12,015.45 and 4,728.12

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Solution

The fourth proportional to 8,707.09, 12,015.45 and 4,728.12 is: 6,524.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,707.09 : 12,015.45 = 4,728.12 : x
  2. Step 2: Convert to fraction form
    8,707.09/12,015.45 = 4,728.12/x
  3. Step 3: Cross multiply
    8,707.09x = 12,015.45 × 4,728.12
  4. Step 4: Simplify right side
    8,707.09x = 56,810,489.45
  5. Step 5: Solve for x
    x = 56,810,489.45/8,707.09
  6. Step 6: Final answer
    x = 6,524.62

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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.