Home / 6,638.76-9,156.24-6,191.64

Finding the Fourth Proportional to 6,638.76, 9,156.24 and 6,191.64

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Solution

The fourth proportional to 6,638.76, 9,156.24 and 6,191.64 is: 8,539.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,638.76 : 9,156.24 = 6,191.64 : x
  2. Step 2: Convert to fraction form
    6,638.76/9,156.24 = 6,191.64/x
  3. Step 3: Cross multiply
    6,638.76x = 9,156.24 × 6,191.64
  4. Step 4: Simplify right side
    6,638.76x = 56,692,141.83
  5. Step 5: Solve for x
    x = 56,692,141.83/6,638.76
  6. Step 6: Final answer
    x = 8,539.57

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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.