Home / 7,118.65-10,678.52-5,455.18

Finding the Fourth Proportional to 7,118.65, 10,678.52 and 5,455.18

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Solution

The fourth proportional to 7,118.65, 10,678.52 and 5,455.18 is: 8,183.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,118.65 : 10,678.52 = 5,455.18 : x
  2. Step 2: Convert to fraction form
    7,118.65/10,678.52 = 5,455.18/x
  3. Step 3: Cross multiply
    7,118.65x = 10,678.52 × 5,455.18
  4. Step 4: Simplify right side
    7,118.65x = 58,253,248.73
  5. Step 5: Solve for x
    x = 58,253,248.73/7,118.65
  6. Step 6: Final answer
    x = 8,183.19

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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.