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Finding the Fourth Proportional to 2,503.99, 3,455.49 and 1,384.98

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Solution

The fourth proportional to 2,503.99, 3,455.49 and 1,384.98 is: 1,911.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,503.99 : 3,455.49 = 1,384.98 : x
  2. Step 2: Convert to fraction form
    2,503.99/3,455.49 = 1,384.98/x
  3. Step 3: Cross multiply
    2,503.99x = 3,455.49 × 1,384.98
  4. Step 4: Simplify right side
    2,503.99x = 4,785,784.54
  5. Step 5: Solve for x
    x = 4,785,784.54/2,503.99
  6. Step 6: Final answer
    x = 1,911.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.