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Finding the Fourth Proportional to 8,692.20, 13,038.30 and 2,849.40

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Solution

The fourth proportional to 8,692.20, 13,038.30 and 2,849.40 is: 4,274.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,692.20 : 13,038.30 = 2,849.40 : x
  2. Step 2: Convert to fraction form
    8,692.20/13,038.30 = 2,849.40/x
  3. Step 3: Cross multiply
    8,692.20x = 13,038.30 × 2,849.40
  4. Step 4: Simplify right side
    8,692.20x = 37,151,332.02
  5. Step 5: Solve for x
    x = 37,151,332.02/8,692.20
  6. Step 6: Final answer
    x = 4,274.10

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1.5x scale

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.