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Finding the Fourth Proportional to 1,692.90, 2,543.40 and 1,514.70

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Solution

The fourth proportional to 1,692.90, 2,543.40 and 1,514.70 is: 2,275.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,692.90 : 2,543.40 = 1,514.70 : x
  2. Step 2: Convert to fraction form
    1,692.90/2,543.40 = 1,514.70/x
  3. Step 3: Cross multiply
    1,692.90x = 2,543.40 × 1,514.70
  4. Step 4: Simplify right side
    1,692.90x = 3,852,487.98
  5. Step 5: Solve for x
    x = 3,852,487.98/1,692.90
  6. Step 6: Final answer
    x = 2,275.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.