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Finding the Fourth Proportional to 6,261.71, 9,390.74 and 3,919.19

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Solution

The fourth proportional to 6,261.71, 9,390.74 and 3,919.19 is: 5,877.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,261.71 : 9,390.74 = 3,919.19 : x
  2. Step 2: Convert to fraction form
    6,261.71/9,390.74 = 3,919.19/x
  3. Step 3: Cross multiply
    6,261.71x = 9,390.74 × 3,919.19
  4. Step 4: Simplify right side
    6,261.71x = 36,804,027.75
  5. Step 5: Solve for x
    x = 36,804,027.75/6,261.71
  6. Step 6: Final answer
    x = 5,877.64

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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.