Home / 3,515.91-5,274.16-918.84

Finding the Fourth Proportional to 3,515.91, 5,274.16 and 918.84

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Solution

The fourth proportional to 3,515.91, 5,274.16 and 918.84 is: 1,378.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,515.91 : 5,274.16 = 918.84 : x
  2. Step 2: Convert to fraction form
    3,515.91/5,274.16 = 918.84/x
  3. Step 3: Cross multiply
    3,515.91x = 5,274.16 × 918.84
  4. Step 4: Simplify right side
    3,515.91x = 4,846,131.82
  5. Step 5: Solve for x
    x = 4,846,131.82/3,515.91
  6. Step 6: Final answer
    x = 1,378.35

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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.