Home / 6,989.36-10,487.66-3,868.80

Finding the Fourth Proportional to 6,989.36, 10,487.66 and 3,868.80

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Solution

The fourth proportional to 6,989.36, 10,487.66 and 3,868.80 is: 5,805.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,989.36 : 10,487.66 = 3,868.80 : x
  2. Step 2: Convert to fraction form
    6,989.36/10,487.66 = 3,868.80/x
  3. Step 3: Cross multiply
    6,989.36x = 10,487.66 × 3,868.80
  4. Step 4: Simplify right side
    6,989.36x = 40,574,659.01
  5. Step 5: Solve for x
    x = 40,574,659.01/6,989.36
  6. Step 6: Final answer
    x = 5,805.20

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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.