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Finding the Fourth Proportional to 8,648.70, 12,973.05 and 2,492.70

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Solution

The fourth proportional to 8,648.70, 12,973.05 and 2,492.70 is: 3,739.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,648.70 : 12,973.05 = 2,492.70 : x
  2. Step 2: Convert to fraction form
    8,648.70/12,973.05 = 2,492.70/x
  3. Step 3: Cross multiply
    8,648.70x = 12,973.05 × 2,492.70
  4. Step 4: Simplify right side
    8,648.70x = 32,337,921.74
  5. Step 5: Solve for x
    x = 32,337,921.74/8,648.70
  6. Step 6: Final answer
    x = 3,739.05

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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.