Home / 1,953.07-2,692.43-1,392.57

Finding the Fourth Proportional to 1,953.07, 2,692.43 and 1,392.57

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Solution

The fourth proportional to 1,953.07, 2,692.43 and 1,392.57 is: 1,919.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,953.07 : 2,692.43 = 1,392.57 : x
  2. Step 2: Convert to fraction form
    1,953.07/2,692.43 = 1,392.57/x
  3. Step 3: Cross multiply
    1,953.07x = 2,692.43 × 1,392.57
  4. Step 4: Simplify right side
    1,953.07x = 3,749,390.63
  5. Step 5: Solve for x
    x = 3,749,390.63/1,953.07
  6. Step 6: Final answer
    x = 1,919.74

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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.