Home / 5,555.61-7,665.45-3,318.21

Finding the Fourth Proportional to 5,555.61, 7,665.45 and 3,318.21

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Solution

The fourth proportional to 5,555.61, 7,665.45 and 3,318.21 is: 4,578.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,555.61 : 7,665.45 = 3,318.21 : x
  2. Step 2: Convert to fraction form
    5,555.61/7,665.45 = 3,318.21/x
  3. Step 3: Cross multiply
    5,555.61x = 7,665.45 × 3,318.21
  4. Step 4: Simplify right side
    5,555.61x = 25,435,572.84
  5. Step 5: Solve for x
    x = 25,435,572.84/5,555.61
  6. Step 6: Final answer
    x = 4,578.36

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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.