Home / 1,621.24-2,431.62-581.06

Finding the Fourth Proportional to 1,621.24, 2,431.62 and 581.06

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Solution

The fourth proportional to 1,621.24, 2,431.62 and 581.06 is: 871.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621.24 : 2,431.62 = 581.06 : x
  2. Step 2: Convert to fraction form
    1,621.24/2,431.62 = 581.06/x
  3. Step 3: Cross multiply
    1,621.24x = 2,431.62 × 581.06
  4. Step 4: Simplify right side
    1,621.24x = 1,412,917.12
  5. Step 5: Solve for x
    x = 1,412,917.12/1,621.24
  6. Step 6: Final answer
    x = 871.50

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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.