Home / 2,985.88-4,123.76-1,995.36

Finding the Fourth Proportional to 2,985.88, 4,123.76 and 1,995.36

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Solution

The fourth proportional to 2,985.88, 4,123.76 and 1,995.36 is: 2,755.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.88 : 4,123.76 = 1,995.36 : x
  2. Step 2: Convert to fraction form
    2,985.88/4,123.76 = 1,995.36/x
  3. Step 3: Cross multiply
    2,985.88x = 4,123.76 × 1,995.36
  4. Step 4: Simplify right side
    2,985.88x = 8,228,385.75
  5. Step 5: Solve for x
    x = 8,228,385.75/2,985.88
  6. Step 6: Final answer
    x = 2,755.77

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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.