Home / 6,385.04-8,811.52-3,867.60

Finding the Fourth Proportional to 6,385.04, 8,811.52 and 3,867.60

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Solution

The fourth proportional to 6,385.04, 8,811.52 and 3,867.60 is: 5,337.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,385.04 : 8,811.52 = 3,867.60 : x
  2. Step 2: Convert to fraction form
    6,385.04/8,811.52 = 3,867.60/x
  3. Step 3: Cross multiply
    6,385.04x = 8,811.52 × 3,867.60
  4. Step 4: Simplify right side
    6,385.04x = 34,079,425.08
  5. Step 5: Solve for x
    x = 34,079,425.08/6,385.04
  6. Step 6: Final answer
    x = 5,337.39

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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.