Home / 7,245.64-9,989.22-4,722.76

Finding the Fourth Proportional to 7,245.64, 9,989.22 and 4,722.76

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Solution

The fourth proportional to 7,245.64, 9,989.22 and 4,722.76 is: 6,511.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,245.64 : 9,989.22 = 4,722.76 : x
  2. Step 2: Convert to fraction form
    7,245.64/9,989.22 = 4,722.76/x
  3. Step 3: Cross multiply
    7,245.64x = 9,989.22 × 4,722.76
  4. Step 4: Simplify right side
    7,245.64x = 47,176,688.65
  5. Step 5: Solve for x
    x = 47,176,688.65/7,245.64
  6. Step 6: Final answer
    x = 6,511.05

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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.