Home / 7,150.32-10,729.35-2,990.70

Finding the Fourth Proportional to 7,150.32, 10,729.35 and 2,990.70

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Solution

The fourth proportional to 7,150.32, 10,729.35 and 2,990.70 is: 4,487.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,150.32 : 10,729.35 = 2,990.70 : x
  2. Step 2: Convert to fraction form
    7,150.32/10,729.35 = 2,990.70/x
  3. Step 3: Cross multiply
    7,150.32x = 10,729.35 × 2,990.70
  4. Step 4: Simplify right side
    7,150.32x = 32,088,267.05
  5. Step 5: Solve for x
    x = 32,088,267.05/7,150.32
  6. Step 6: Final answer
    x = 4,487.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.