Home / 4,140.32-6,211.35-1,218.38

Finding the Fourth Proportional to 4,140.32, 6,211.35 and 1,218.38

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Solution

The fourth proportional to 4,140.32, 6,211.35 and 1,218.38 is: 1,827.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,140.32 : 6,211.35 = 1,218.38 : x
  2. Step 2: Convert to fraction form
    4,140.32/6,211.35 = 1,218.38/x
  3. Step 3: Cross multiply
    4,140.32x = 6,211.35 × 1,218.38
  4. Step 4: Simplify right side
    4,140.32x = 7,567,784.61
  5. Step 5: Solve for x
    x = 7,567,784.61/4,140.32
  6. Step 6: Final answer
    x = 1,827.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.