Home / 3,205.40-4,423.74-1,946.77

Finding the Fourth Proportional to 3,205.40, 4,423.74 and 1,946.77

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Solution

The fourth proportional to 3,205.40, 4,423.74 and 1,946.77 is: 2,686.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,205.40 : 4,423.74 = 1,946.77 : x
  2. Step 2: Convert to fraction form
    3,205.40/4,423.74 = 1,946.77/x
  3. Step 3: Cross multiply
    3,205.40x = 4,423.74 × 1,946.77
  4. Step 4: Simplify right side
    3,205.40x = 8,612,010.10
  5. Step 5: Solve for x
    x = 8,612,010.10/3,205.40
  6. Step 6: Final answer
    x = 2,686.72

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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.