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Finding the Fourth Proportional to 2,611.79, 3,604.23 and 1,432.90

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Solution

The fourth proportional to 2,611.79, 3,604.23 and 1,432.90 is: 1,977.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,611.79 : 3,604.23 = 1,432.90 : x
  2. Step 2: Convert to fraction form
    2,611.79/3,604.23 = 1,432.90/x
  3. Step 3: Cross multiply
    2,611.79x = 3,604.23 × 1,432.90
  4. Step 4: Simplify right side
    2,611.79x = 5,164,501.17
  5. Step 5: Solve for x
    x = 5,164,501.17/2,611.79
  6. Step 6: Final answer
    x = 1,977.38

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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.