Home / 4,139.76-6,209.66-1,218.10

Finding the Fourth Proportional to 4,139.76, 6,209.66 and 1,218.10

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Solution

The fourth proportional to 4,139.76, 6,209.66 and 1,218.10 is: 1,827.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,139.76 : 6,209.66 = 1,218.10 : x
  2. Step 2: Convert to fraction form
    4,139.76/6,209.66 = 1,218.10/x
  3. Step 3: Cross multiply
    4,139.76x = 6,209.66 × 1,218.10
  4. Step 4: Simplify right side
    4,139.76x = 7,563,986.85
  5. Step 5: Solve for x
    x = 7,563,986.85/4,139.76
  6. Step 6: Final answer
    x = 1,827.16

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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.