Home / 2,289.39-3,159.55-1,294.74

Finding the Fourth Proportional to 2,289.39, 3,159.55 and 1,294.74

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Solution

The fourth proportional to 2,289.39, 3,159.55 and 1,294.74 is: 1,786.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,289.39 : 3,159.55 = 1,294.74 : x
  2. Step 2: Convert to fraction form
    2,289.39/3,159.55 = 1,294.74/x
  3. Step 3: Cross multiply
    2,289.39x = 3,159.55 × 1,294.74
  4. Step 4: Simplify right side
    2,289.39x = 4,090,795.77
  5. Step 5: Solve for x
    x = 4,090,795.77/2,289.39
  6. Step 6: Final answer
    x = 1,786.85

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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.