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Finding the Fourth Proportional to 8,488.60, 12,707.30 and 7,464.60

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Solution

The fourth proportional to 8,488.60, 12,707.30 and 7,464.60 is: 11,174.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,488.60 : 12,707.30 = 7,464.60 : x
  2. Step 2: Convert to fraction form
    8,488.60/12,707.30 = 7,464.60/x
  3. Step 3: Cross multiply
    8,488.60x = 12,707.30 × 7,464.60
  4. Step 4: Simplify right side
    8,488.60x = 94,854,911.58
  5. Step 5: Solve for x
    x = 94,854,911.58/8,488.60
  6. Step 6: Final answer
    x = 11,174.39

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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.