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Finding the Fourth Proportional to 6,406.40, 9,611.40 and 2,023.76

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Solution

The fourth proportional to 6,406.40, 9,611.40 and 2,023.76 is: 3,036.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,406.40 : 9,611.40 = 2,023.76 : x
  2. Step 2: Convert to fraction form
    6,406.40/9,611.40 = 2,023.76/x
  3. Step 3: Cross multiply
    6,406.40x = 9,611.40 × 2,023.76
  4. Step 4: Simplify right side
    6,406.40x = 19,451,166.86
  5. Step 5: Solve for x
    x = 19,451,166.86/6,406.40
  6. Step 6: Final answer
    x = 3,036.21

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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.