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Finding the Fourth Proportional to 2,951.61, 4,072.88 and 1,692.32

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Solution

The fourth proportional to 2,951.61, 4,072.88 and 1,692.32 is: 2,335.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,951.61 : 4,072.88 = 1,692.32 : x
  2. Step 2: Convert to fraction form
    2,951.61/4,072.88 = 1,692.32/x
  3. Step 3: Cross multiply
    2,951.61x = 4,072.88 × 1,692.32
  4. Step 4: Simplify right side
    2,951.61x = 6,892,587.46
  5. Step 5: Solve for x
    x = 6,892,587.46/2,951.61
  6. Step 6: Final answer
    x = 2,335.20

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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.