Home / 6,319.12-8,720.55-3,486.53

Finding the Fourth Proportional to 6,319.12, 8,720.55 and 3,486.53

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Solution

The fourth proportional to 6,319.12, 8,720.55 and 3,486.53 is: 4,811.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,319.12 : 8,720.55 = 3,486.53 : x
  2. Step 2: Convert to fraction form
    6,319.12/8,720.55 = 3,486.53/x
  3. Step 3: Cross multiply
    6,319.12x = 8,720.55 × 3,486.53
  4. Step 4: Simplify right side
    6,319.12x = 30,404,415.59
  5. Step 5: Solve for x
    x = 30,404,415.59/6,319.12
  6. Step 6: Final answer
    x = 4,811.50

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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.