Home / 1,951.07-2,692.40-1,111.77

Finding the Fourth Proportional to 1,951.07, 2,692.40 and 1,111.77

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Solution

The fourth proportional to 1,951.07, 2,692.40 and 1,111.77 is: 1,534.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,951.07 : 2,692.40 = 1,111.77 : x
  2. Step 2: Convert to fraction form
    1,951.07/2,692.40 = 1,111.77/x
  3. Step 3: Cross multiply
    1,951.07x = 2,692.40 × 1,111.77
  4. Step 4: Simplify right side
    1,951.07x = 2,993,329.55
  5. Step 5: Solve for x
    x = 2,993,329.55/1,951.07
  6. Step 6: Final answer
    x = 1,534.20

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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.