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Finding the Fourth Proportional to 1,953.40, 2,692.38 and 1,579

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Solution

The fourth proportional to 1,953.40, 2,692.38 and 1,579 is: 2,176.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,953.40 : 2,692.38 = 1,579 : x
  2. Step 2: Convert to fraction form
    1,953.40/2,692.38 = 1,579/x
  3. Step 3: Cross multiply
    1,953.40x = 2,692.38 × 1,579
  4. Step 4: Simplify right side
    1,953.40x = 4,251,268.02
  5. Step 5: Solve for x
    x = 4,251,268.02/1,953.40
  6. Step 6: Final answer
    x = 2,176.34

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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.