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Finding the Fourth Proportional to 1,692.38, 2,335.66 and 946.60

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Solution

The fourth proportional to 1,692.38, 2,335.66 and 946.60 is: 1,306.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,692.38 : 2,335.66 = 946.60 : x
  2. Step 2: Convert to fraction form
    1,692.38/2,335.66 = 946.60/x
  3. Step 3: Cross multiply
    1,692.38x = 2,335.66 × 946.60
  4. Step 4: Simplify right side
    1,692.38x = 2,210,935.76
  5. Step 5: Solve for x
    x = 2,210,935.76/1,692.38
  6. Step 6: Final answer
    x = 1,306.41

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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.