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Finding the Fourth Proportional to 6,361.74, 8,779.25 and 3,709.40

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Solution

The fourth proportional to 6,361.74, 8,779.25 and 3,709.40 is: 5,119.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,361.74 : 8,779.25 = 3,709.40 : x
  2. Step 2: Convert to fraction form
    6,361.74/8,779.25 = 3,709.40/x
  3. Step 3: Cross multiply
    6,361.74x = 8,779.25 × 3,709.40
  4. Step 4: Simplify right side
    6,361.74x = 32,565,715.33
  5. Step 5: Solve for x
    x = 32,565,715.33/6,361.74
  6. Step 6: Final answer
    x = 5,119.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.