Home / 1,583.72-2,183.85-1,087.08

Finding the Fourth Proportional to 1,583.72, 2,183.85 and 1,087.08

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Solution

The fourth proportional to 1,583.72, 2,183.85 and 1,087.08 is: 1,499.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,583.72 : 2,183.85 = 1,087.08 : x
  2. Step 2: Convert to fraction form
    1,583.72/2,183.85 = 1,087.08/x
  3. Step 3: Cross multiply
    1,583.72x = 2,183.85 × 1,087.08
  4. Step 4: Simplify right side
    1,583.72x = 2,374,019.66
  5. Step 5: Solve for x
    x = 2,374,019.66/1,583.72
  6. Step 6: Final answer
    x = 1,499.01

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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.