Home / 2,251.81-3,107.54-1,307.68

Finding the Fourth Proportional to 2,251.81, 3,107.54 and 1,307.68

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Solution

The fourth proportional to 2,251.81, 3,107.54 and 1,307.68 is: 1,804.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,251.81 : 3,107.54 = 1,307.68 : x
  2. Step 2: Convert to fraction form
    2,251.81/3,107.54 = 1,307.68/x
  3. Step 3: Cross multiply
    2,251.81x = 3,107.54 × 1,307.68
  4. Step 4: Simplify right side
    2,251.81x = 4,063,658.50
  5. Step 5: Solve for x
    x = 4,063,658.50/2,251.81
  6. Step 6: Final answer
    x = 1,804.62

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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.