Home / 1,985.92-2,741.60-1,855.04

Finding the Fourth Proportional to 1,985.92, 2,741.60 and 1,855.04

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Solution

The fourth proportional to 1,985.92, 2,741.60 and 1,855.04 is: 2,560.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985.92 : 2,741.60 = 1,855.04 : x
  2. Step 2: Convert to fraction form
    1,985.92/2,741.60 = 1,855.04/x
  3. Step 3: Cross multiply
    1,985.92x = 2,741.60 × 1,855.04
  4. Step 4: Simplify right side
    1,985.92x = 5,085,777.66
  5. Step 5: Solve for x
    x = 5,085,777.66/1,985.92
  6. Step 6: Final answer
    x = 2,560.92

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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.