Home / 1,585.58-2,187.20-995.09

Finding the Fourth Proportional to 1,585.58, 2,187.20 and 995.09

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Solution

The fourth proportional to 1,585.58, 2,187.20 and 995.09 is: 1,372.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,585.58 : 2,187.20 = 995.09 : x
  2. Step 2: Convert to fraction form
    1,585.58/2,187.20 = 995.09/x
  3. Step 3: Cross multiply
    1,585.58x = 2,187.20 × 995.09
  4. Step 4: Simplify right side
    1,585.58x = 2,176,452.40
  5. Step 5: Solve for x
    x = 2,176,452.40/1,585.58
  6. Step 6: Final answer
    x = 1,372.66

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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.