Home / 6,319.52-8,720.57-3,486.90

Finding the Fourth Proportional to 6,319.52, 8,720.57 and 3,486.90

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Solution

The fourth proportional to 6,319.52, 8,720.57 and 3,486.90 is: 4,811.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,319.52 : 8,720.57 = 3,486.90 : x
  2. Step 2: Convert to fraction form
    6,319.52/8,720.57 = 3,486.90/x
  3. Step 3: Cross multiply
    6,319.52x = 8,720.57 × 3,486.90
  4. Step 4: Simplify right side
    6,319.52x = 30,407,738.10
  5. Step 5: Solve for x
    x = 30,407,738.10/6,319.52
  6. Step 6: Final answer
    x = 4,811.72

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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.