Home / 3,146.79-4,342.23-1,887.80

Finding the Fourth Proportional to 3,146.79, 4,342.23 and 1,887.80

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Solution

The fourth proportional to 3,146.79, 4,342.23 and 1,887.80 is: 2,604.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,146.79 : 4,342.23 = 1,887.80 : x
  2. Step 2: Convert to fraction form
    3,146.79/4,342.23 = 1,887.80/x
  3. Step 3: Cross multiply
    3,146.79x = 4,342.23 × 1,887.80
  4. Step 4: Simplify right side
    3,146.79x = 8,197,240.08
  5. Step 5: Solve for x
    x = 8,197,240.08/3,146.79
  6. Step 6: Final answer
    x = 2,604.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.