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Finding the Fourth Proportional to 2,051.80, 3,078.12 and 753.26

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Solution

The fourth proportional to 2,051.80, 3,078.12 and 753.26 is: 1,130.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,051.80 : 3,078.12 = 753.26 : x
  2. Step 2: Convert to fraction form
    2,051.80/3,078.12 = 753.26/x
  3. Step 3: Cross multiply
    2,051.80x = 3,078.12 × 753.26
  4. Step 4: Simplify right side
    2,051.80x = 2,318,624.67
  5. Step 5: Solve for x
    x = 2,318,624.67/2,051.80
  6. Step 6: Final answer
    x = 1,130.04

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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.