Home / 10,390.80-15,584.58-3,813.60

Finding the Fourth Proportional to 10,390.80, 15,584.58 and 3,813.60

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Solution

The fourth proportional to 10,390.80, 15,584.58 and 3,813.60 is: 5,719.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,390.80 : 15,584.58 = 3,813.60 : x
  2. Step 2: Convert to fraction form
    10,390.80/15,584.58 = 3,813.60/x
  3. Step 3: Cross multiply
    10,390.80x = 15,584.58 × 3,813.60
  4. Step 4: Simplify right side
    10,390.80x = 59,433,354.29
  5. Step 5: Solve for x
    x = 59,433,354.29/10,390.80
  6. Step 6: Final answer
    x = 5,719.81

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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.