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Finding the Fourth Proportional to 1,678.14, 2,514.62 and 898.25

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Solution

The fourth proportional to 1,678.14, 2,514.62 and 898.25 is: 1,345.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,678.14 : 2,514.62 = 898.25 : x
  2. Step 2: Convert to fraction form
    1,678.14/2,514.62 = 898.25/x
  3. Step 3: Cross multiply
    1,678.14x = 2,514.62 × 898.25
  4. Step 4: Simplify right side
    1,678.14x = 2,258,747.09
  5. Step 5: Solve for x
    x = 2,258,747.09/1,678.14
  6. Step 6: Final answer
    x = 1,345.98

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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.