Home / 4,685.85-6,464.61-3,191.40

Finding the Fourth Proportional to 4,685.85, 6,464.61 and 3,191.40

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Solution

The fourth proportional to 4,685.85, 6,464.61 and 3,191.40 is: 4,402.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,685.85 : 6,464.61 = 3,191.40 : x
  2. Step 2: Convert to fraction form
    4,685.85/6,464.61 = 3,191.40/x
  3. Step 3: Cross multiply
    4,685.85x = 6,464.61 × 3,191.40
  4. Step 4: Simplify right side
    4,685.85x = 20,631,156.35
  5. Step 5: Solve for x
    x = 20,631,156.35/4,685.85
  6. Step 6: Final answer
    x = 4,402.86

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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.