Home / 7,621.39-10,511.87-5,380.93

Finding the Fourth Proportional to 7,621.39, 10,511.87 and 5,380.93

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Solution

The fourth proportional to 7,621.39, 10,511.87 and 5,380.93 is: 7,421.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,621.39 : 10,511.87 = 5,380.93 : x
  2. Step 2: Convert to fraction form
    7,621.39/10,511.87 = 5,380.93/x
  3. Step 3: Cross multiply
    7,621.39x = 10,511.87 × 5,380.93
  4. Step 4: Simplify right side
    7,621.39x = 56,563,609.73
  5. Step 5: Solve for x
    x = 56,563,609.73/7,621.39
  6. Step 6: Final answer
    x = 7,421.69

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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.