Home / 1,692.40-2,334.82-1,102.72

Finding the Fourth Proportional to 1,692.40, 2,334.82 and 1,102.72

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Solution

The fourth proportional to 1,692.40, 2,334.82 and 1,102.72 is: 1,521.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,692.40 : 2,334.82 = 1,102.72 : x
  2. Step 2: Convert to fraction form
    1,692.40/2,334.82 = 1,102.72/x
  3. Step 3: Cross multiply
    1,692.40x = 2,334.82 × 1,102.72
  4. Step 4: Simplify right side
    1,692.40x = 2,574,652.71
  5. Step 5: Solve for x
    x = 2,574,652.71/1,692.40
  6. Step 6: Final answer
    x = 1,521.30

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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.