Home / 9,865.80-13,614.10-5,388.60

Finding the Fourth Proportional to 9,865.80, 13,614.10 and 5,388.60

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Solution

The fourth proportional to 9,865.80, 13,614.10 and 5,388.60 is: 7,435.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,865.80 : 13,614.10 = 5,388.60 : x
  2. Step 2: Convert to fraction form
    9,865.80/13,614.10 = 5,388.60/x
  3. Step 3: Cross multiply
    9,865.80x = 13,614.10 × 5,388.60
  4. Step 4: Simplify right side
    9,865.80x = 73,360,939.26
  5. Step 5: Solve for x
    x = 73,360,939.26/9,865.80
  6. Step 6: Final answer
    x = 7,435.88

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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.