Home / 9,789.66-14,687.21-3,220.45

Finding the Fourth Proportional to 9,789.66, 14,687.21 and 3,220.45

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Solution

The fourth proportional to 9,789.66, 14,687.21 and 3,220.45 is: 4,831.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,789.66 : 14,687.21 = 3,220.45 : x
  2. Step 2: Convert to fraction form
    9,789.66/14,687.21 = 3,220.45/x
  3. Step 3: Cross multiply
    9,789.66x = 14,687.21 × 3,220.45
  4. Step 4: Simplify right side
    9,789.66x = 47,299,396.78
  5. Step 5: Solve for x
    x = 47,299,396.78/9,789.66
  6. Step 6: Final answer
    x = 4,831.57

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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.