Home / 8,707.28-12,015.71-4,728.30

Finding the Fourth Proportional to 8,707.28, 12,015.71 and 4,728.30

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Solution

The fourth proportional to 8,707.28, 12,015.71 and 4,728.30 is: 6,524.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,707.28 : 12,015.71 = 4,728.30 : x
  2. Step 2: Convert to fraction form
    8,707.28/12,015.71 = 4,728.30/x
  3. Step 3: Cross multiply
    8,707.28x = 12,015.71 × 4,728.30
  4. Step 4: Simplify right side
    8,707.28x = 56,813,857.95
  5. Step 5: Solve for x
    x = 56,813,857.95/8,707.28
  6. Step 6: Final answer
    x = 6,524.87

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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.