Home / 2,587.95-3,879.19-1,857.13

Finding the Fourth Proportional to 2,587.95, 3,879.19 and 1,857.13

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Solution

The fourth proportional to 2,587.95, 3,879.19 and 1,857.13 is: 2,783.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,587.95 : 3,879.19 = 1,857.13 : x
  2. Step 2: Convert to fraction form
    2,587.95/3,879.19 = 1,857.13/x
  3. Step 3: Cross multiply
    2,587.95x = 3,879.19 × 1,857.13
  4. Step 4: Simplify right side
    2,587.95x = 7,204,152.75
  5. Step 5: Solve for x
    x = 7,204,152.75/2,587.95
  6. Step 6: Final answer
    x = 2,783.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.