Home / 1,537.38-2,119.35-1,222.77

Finding the Fourth Proportional to 1,537.38, 2,119.35 and 1,222.77

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Solution

The fourth proportional to 1,537.38, 2,119.35 and 1,222.77 is: 1,685.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,537.38 : 2,119.35 = 1,222.77 : x
  2. Step 2: Convert to fraction form
    1,537.38/2,119.35 = 1,222.77/x
  3. Step 3: Cross multiply
    1,537.38x = 2,119.35 × 1,222.77
  4. Step 4: Simplify right side
    1,537.38x = 2,591,477.60
  5. Step 5: Solve for x
    x = 2,591,477.60/1,537.38
  6. Step 6: Final answer
    x = 1,685.65

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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.