Home / 4,140.40-6,243.40-3,686.80

Finding the Fourth Proportional to 4,140.40, 6,243.40 and 3,686.80

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Solution

The fourth proportional to 4,140.40, 6,243.40 and 3,686.80 is: 5,559.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,140.40 : 6,243.40 = 3,686.80 : x
  2. Step 2: Convert to fraction form
    4,140.40/6,243.40 = 3,686.80/x
  3. Step 3: Cross multiply
    4,140.40x = 6,243.40 × 3,686.80
  4. Step 4: Simplify right side
    4,140.40x = 23,018,167.12
  5. Step 5: Solve for x
    x = 23,018,167.12/4,140.40
  6. Step 6: Final answer
    x = 5,559.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.