Home / 6,406.70-9,615.45-3,122.60

Finding the Fourth Proportional to 6,406.70, 9,615.45 and 3,122.60

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Solution

The fourth proportional to 6,406.70, 9,615.45 and 3,122.60 is: 4,686.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,406.70 : 9,615.45 = 3,122.60 : x
  2. Step 2: Convert to fraction form
    6,406.70/9,615.45 = 3,122.60/x
  3. Step 3: Cross multiply
    6,406.70x = 9,615.45 × 3,122.60
  4. Step 4: Simplify right side
    6,406.70x = 30,025,204.17
  5. Step 5: Solve for x
    x = 30,025,204.17/6,406.70
  6. Step 6: Final answer
    x = 4,686.53

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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.