Home / 4,140.36-6,210.78-1,218.42

Finding the Fourth Proportional to 4,140.36, 6,210.78 and 1,218.42

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Solution

The fourth proportional to 4,140.36, 6,210.78 and 1,218.42 is: 1,827.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,140.36 : 6,210.78 = 1,218.42 : x
  2. Step 2: Convert to fraction form
    4,140.36/6,210.78 = 1,218.42/x
  3. Step 3: Cross multiply
    4,140.36x = 6,210.78 × 1,218.42
  4. Step 4: Simplify right side
    4,140.36x = 7,567,338.57
  5. Step 5: Solve for x
    x = 7,567,338.57/4,140.36
  6. Step 6: Final answer
    x = 1,827.70

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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.