Home / 1,260.08-1,889.52-438.25

Finding the Fourth Proportional to 1,260.08, 1,889.52 and 438.25

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Solution

The fourth proportional to 1,260.08, 1,889.52 and 438.25 is: 657.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260.08 : 1,889.52 = 438.25 : x
  2. Step 2: Convert to fraction form
    1,260.08/1,889.52 = 438.25/x
  3. Step 3: Cross multiply
    1,260.08x = 1,889.52 × 438.25
  4. Step 4: Simplify right side
    1,260.08x = 828,081.78
  5. Step 5: Solve for x
    x = 828,081.78/1,260.08
  6. Step 6: Final answer
    x = 657.17

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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.