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Finding the Fourth Proportional to 8,539.08, 12,810.60 and 3,345

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Solution

The fourth proportional to 8,539.08, 12,810.60 and 3,345 is: 5,018.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,539.08 : 12,810.60 = 3,345 : x
  2. Step 2: Convert to fraction form
    8,539.08/12,810.60 = 3,345/x
  3. Step 3: Cross multiply
    8,539.08x = 12,810.60 × 3,345
  4. Step 4: Simplify right side
    8,539.08x = 42,851,457
  5. Step 5: Solve for x
    x = 42,851,457/8,539.08
  6. Step 6: Final answer
    x = 5,018.28

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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.