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Finding the Fourth Proportional to 3,514.92, 5,271.93 and 918.06

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Solution

The fourth proportional to 3,514.92, 5,271.93 and 918.06 is: 1,376.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,514.92 : 5,271.93 = 918.06 : x
  2. Step 2: Convert to fraction form
    3,514.92/5,271.93 = 918.06/x
  3. Step 3: Cross multiply
    3,514.92x = 5,271.93 × 918.06
  4. Step 4: Simplify right side
    3,514.92x = 4,839,948.06
  5. Step 5: Solve for x
    x = 4,839,948.06/3,514.92
  6. Step 6: Final answer
    x = 1,376.97

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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.