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Finding the Fourth Proportional to 2,321.62, 3,480 and 1,704.40

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Solution

The fourth proportional to 2,321.62, 3,480 and 1,704.40 is: 2,554.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,321.62 : 3,480 = 1,704.40 : x
  2. Step 2: Convert to fraction form
    2,321.62/3,480 = 1,704.40/x
  3. Step 3: Cross multiply
    2,321.62x = 3,480 × 1,704.40
  4. Step 4: Simplify right side
    2,321.62x = 5,931,312
  5. Step 5: Solve for x
    x = 5,931,312/2,321.62
  6. Step 6: Final answer
    x = 2,554.82

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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.