Home / 1,907.25-2,854.78-1,125.39

Finding the Fourth Proportional to 1,907.25, 2,854.78 and 1,125.39

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Solution

The fourth proportional to 1,907.25, 2,854.78 and 1,125.39 is: 1,684.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,907.25 : 2,854.78 = 1,125.39 : x
  2. Step 2: Convert to fraction form
    1,907.25/2,854.78 = 1,125.39/x
  3. Step 3: Cross multiply
    1,907.25x = 2,854.78 × 1,125.39
  4. Step 4: Simplify right side
    1,907.25x = 3,212,748.76
  5. Step 5: Solve for x
    x = 3,212,748.76/1,907.25
  6. Step 6: Final answer
    x = 1,684.50

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1.5x scale

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.