Home / 1,946.40-2,679.72-1,813.92

Finding the Fourth Proportional to 1,946.40, 2,679.72 and 1,813.92

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Solution

The fourth proportional to 1,946.40, 2,679.72 and 1,813.92 is: 2,497.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,946.40 : 2,679.72 = 1,813.92 : x
  2. Step 2: Convert to fraction form
    1,946.40/2,679.72 = 1,813.92/x
  3. Step 3: Cross multiply
    1,946.40x = 2,679.72 × 1,813.92
  4. Step 4: Simplify right side
    1,946.40x = 4,860,797.70
  5. Step 5: Solve for x
    x = 4,860,797.70/1,946.40
  6. Step 6: Final answer
    x = 2,497.33

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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.