Home / 4,140.60-6,209.10-1,218.30

Finding the Fourth Proportional to 4,140.60, 6,209.10 and 1,218.30

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Solution

The fourth proportional to 4,140.60, 6,209.10 and 1,218.30 is: 1,826.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,140.60 : 6,209.10 = 1,218.30 : x
  2. Step 2: Convert to fraction form
    4,140.60/6,209.10 = 1,218.30/x
  3. Step 3: Cross multiply
    4,140.60x = 6,209.10 × 1,218.30
  4. Step 4: Simplify right side
    4,140.60x = 7,564,546.53
  5. Step 5: Solve for x
    x = 7,564,546.53/4,140.60
  6. Step 6: Final answer
    x = 1,826.92

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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.