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Finding the Fourth Proportional to 8,605.58, 12,909.36 and 3,059.45

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Solution

The fourth proportional to 8,605.58, 12,909.36 and 3,059.45 is: 4,589.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,605.58 : 12,909.36 = 3,059.45 : x
  2. Step 2: Convert to fraction form
    8,605.58/12,909.36 = 3,059.45/x
  3. Step 3: Cross multiply
    8,605.58x = 12,909.36 × 3,059.45
  4. Step 4: Simplify right side
    8,605.58x = 39,495,541.45
  5. Step 5: Solve for x
    x = 39,495,541.45/8,605.58
  6. Step 6: Final answer
    x = 4,589.53

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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.