Home / 5,555.69-7,666.75-3,318.07

Finding the Fourth Proportional to 5,555.69, 7,666.75 and 3,318.07

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Solution

The fourth proportional to 5,555.69, 7,666.75 and 3,318.07 is: 4,578.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,555.69 : 7,666.75 = 3,318.07 : x
  2. Step 2: Convert to fraction form
    5,555.69/7,666.75 = 3,318.07/x
  3. Step 3: Cross multiply
    5,555.69x = 7,666.75 × 3,318.07
  4. Step 4: Simplify right side
    5,555.69x = 25,438,758.25
  5. Step 5: Solve for x
    x = 25,438,758.25/5,555.69
  6. Step 6: Final answer
    x = 4,578.87

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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.