Home / 2,890.32-3,985.98-1,946.88

Finding the Fourth Proportional to 2,890.32, 3,985.98 and 1,946.88

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Solution

The fourth proportional to 2,890.32, 3,985.98 and 1,946.88 is: 2,684.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,890.32 : 3,985.98 = 1,946.88 : x
  2. Step 2: Convert to fraction form
    2,890.32/3,985.98 = 1,946.88/x
  3. Step 3: Cross multiply
    2,890.32x = 3,985.98 × 1,946.88
  4. Step 4: Simplify right side
    2,890.32x = 7,760,224.74
  5. Step 5: Solve for x
    x = 7,760,224.74/2,890.32
  6. Step 6: Final answer
    x = 2,684.90

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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.