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Finding the Fourth Proportional to 2,503.81, 3,455.14 and 1,369.45

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Solution

The fourth proportional to 2,503.81, 3,455.14 and 1,369.45 is: 1,889.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,503.81 : 3,455.14 = 1,369.45 : x
  2. Step 2: Convert to fraction form
    2,503.81/3,455.14 = 1,369.45/x
  3. Step 3: Cross multiply
    2,503.81x = 3,455.14 × 1,369.45
  4. Step 4: Simplify right side
    2,503.81x = 4,731,641.47
  5. Step 5: Solve for x
    x = 4,731,641.47/2,503.81
  6. Step 6: Final answer
    x = 1,889.78

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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.