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Finding the Fourth Proportional to 2,923.49, 4,384.99 and 871.49

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Solution

The fourth proportional to 2,923.49, 4,384.99 and 871.49 is: 1,307.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,923.49 : 4,384.99 = 871.49 : x
  2. Step 2: Convert to fraction form
    2,923.49/4,384.99 = 871.49/x
  3. Step 3: Cross multiply
    2,923.49x = 4,384.99 × 871.49
  4. Step 4: Simplify right side
    2,923.49x = 3,821,474.94
  5. Step 5: Solve for x
    x = 3,821,474.94/2,923.49
  6. Step 6: Final answer
    x = 1,307.16

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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.