Home / 10,391.80-15,585.74-2,793.19

Finding the Fourth Proportional to 10,391.80, 15,585.74 and 2,793.19

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Solution

The fourth proportional to 10,391.80, 15,585.74 and 2,793.19 is: 4,189.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,391.80 : 15,585.74 = 2,793.19 : x
  2. Step 2: Convert to fraction form
    10,391.80/15,585.74 = 2,793.19/x
  3. Step 3: Cross multiply
    10,391.80x = 15,585.74 × 2,793.19
  4. Step 4: Simplify right side
    10,391.80x = 43,533,880.18
  5. Step 5: Solve for x
    x = 43,533,880.18/10,391.80
  6. Step 6: Final answer
    x = 4,189.25

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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.