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Finding the Fourth Proportional to 8,488.55, 12,797.93 and 7,916.83

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Solution

The fourth proportional to 8,488.55, 12,797.93 and 7,916.83 is: 11,935.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,488.55 : 12,797.93 = 7,916.83 : x
  2. Step 2: Convert to fraction form
    8,488.55/12,797.93 = 7,916.83/x
  3. Step 3: Cross multiply
    8,488.55x = 12,797.93 × 7,916.83
  4. Step 4: Simplify right side
    8,488.55x = 101,319,023.96
  5. Step 5: Solve for x
    x = 101,319,023.96/8,488.55
  6. Step 6: Final answer
    x = 11,935.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.