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Finding the Fourth Proportional to 1,925.20, 2,888.10 and 626.50

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Solution

The fourth proportional to 1,925.20, 2,888.10 and 626.50 is: 939.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,925.20 : 2,888.10 = 626.50 : x
  2. Step 2: Convert to fraction form
    1,925.20/2,888.10 = 626.50/x
  3. Step 3: Cross multiply
    1,925.20x = 2,888.10 × 626.50
  4. Step 4: Simplify right side
    1,925.20x = 1,809,394.65
  5. Step 5: Solve for x
    x = 1,809,394.65/1,925.20
  6. Step 6: Final answer
    x = 939.85

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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.