Home / 8,898.08-12,279.50-5,172.08

Finding the Fourth Proportional to 8,898.08, 12,279.50 and 5,172.08

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Solution

The fourth proportional to 8,898.08, 12,279.50 and 5,172.08 is: 7,137.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,898.08 : 12,279.50 = 5,172.08 : x
  2. Step 2: Convert to fraction form
    8,898.08/12,279.50 = 5,172.08/x
  3. Step 3: Cross multiply
    8,898.08x = 12,279.50 × 5,172.08
  4. Step 4: Simplify right side
    8,898.08x = 63,510,556.36
  5. Step 5: Solve for x
    x = 63,510,556.36/8,898.08
  6. Step 6: Final answer
    x = 7,137.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.