Home / 6,378.12-8,801.86-4,140.84

Finding the Fourth Proportional to 6,378.12, 8,801.86 and 4,140.84

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Solution

The fourth proportional to 6,378.12, 8,801.86 and 4,140.84 is: 5,714.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,378.12 : 8,801.86 = 4,140.84 : x
  2. Step 2: Convert to fraction form
    6,378.12/8,801.86 = 4,140.84/x
  3. Step 3: Cross multiply
    6,378.12x = 8,801.86 × 4,140.84
  4. Step 4: Simplify right side
    6,378.12x = 36,447,093.96
  5. Step 5: Solve for x
    x = 36,447,093.96/6,378.12
  6. Step 6: Final answer
    x = 5,714.39

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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.