Home / 1,620.08-2,431.75-1,258.82

Finding the Fourth Proportional to 1,620.08, 2,431.75 and 1,258.82

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Solution

The fourth proportional to 1,620.08, 2,431.75 and 1,258.82 is: 1,889.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,620.08 : 2,431.75 = 1,258.82 : x
  2. Step 2: Convert to fraction form
    1,620.08/2,431.75 = 1,258.82/x
  3. Step 3: Cross multiply
    1,620.08x = 2,431.75 × 1,258.82
  4. Step 4: Simplify right side
    1,620.08x = 3,061,138.47
  5. Step 5: Solve for x
    x = 3,061,138.47/1,620.08
  6. Step 6: Final answer
    x = 1,889.50

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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.