Home / 8,812.15-12,152.53-7,025.56

Finding the Fourth Proportional to 8,812.15, 12,152.53 and 7,025.56

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Solution

The fourth proportional to 8,812.15, 12,152.53 and 7,025.56 is: 9,688.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,812.15 : 12,152.53 = 7,025.56 : x
  2. Step 2: Convert to fraction form
    8,812.15/12,152.53 = 7,025.56/x
  3. Step 3: Cross multiply
    8,812.15x = 12,152.53 × 7,025.56
  4. Step 4: Simplify right side
    8,812.15x = 85,378,311.10
  5. Step 5: Solve for x
    x = 85,378,311.10/8,812.15
  6. Step 6: Final answer
    x = 9,688.70

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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.