Home / 6,405.85-8,840.14-3,611.35

Finding the Fourth Proportional to 6,405.85, 8,840.14 and 3,611.35

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Solution

The fourth proportional to 6,405.85, 8,840.14 and 3,611.35 is: 4,983.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,405.85 : 8,840.14 = 3,611.35 : x
  2. Step 2: Convert to fraction form
    6,405.85/8,840.14 = 3,611.35/x
  3. Step 3: Cross multiply
    6,405.85x = 8,840.14 × 3,611.35
  4. Step 4: Simplify right side
    6,405.85x = 31,924,839.59
  5. Step 5: Solve for x
    x = 31,924,839.59/6,405.85
  6. Step 6: Final answer
    x = 4,983.70

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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.