Home / 8,458.99-12,689.33-2,911.60

Finding the Fourth Proportional to 8,458.99, 12,689.33 and 2,911.60

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Solution

The fourth proportional to 8,458.99, 12,689.33 and 2,911.60 is: 4,367.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,458.99 : 12,689.33 = 2,911.60 : x
  2. Step 2: Convert to fraction form
    8,458.99/12,689.33 = 2,911.60/x
  3. Step 3: Cross multiply
    8,458.99x = 12,689.33 × 2,911.60
  4. Step 4: Simplify right side
    8,458.99x = 36,946,253.23
  5. Step 5: Solve for x
    x = 36,946,253.23/8,458.99
  6. Step 6: Final answer
    x = 4,367.69

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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.