Home / 8,899.34-12,277.20-5,121.68

Finding the Fourth Proportional to 8,899.34, 12,277.20 and 5,121.68

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Solution

The fourth proportional to 8,899.34, 12,277.20 and 5,121.68 is: 7,065.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,899.34 : 12,277.20 = 5,121.68 : x
  2. Step 2: Convert to fraction form
    8,899.34/12,277.20 = 5,121.68/x
  3. Step 3: Cross multiply
    8,899.34x = 12,277.20 × 5,121.68
  4. Step 4: Simplify right side
    8,899.34x = 62,879,889.70
  5. Step 5: Solve for x
    x = 62,879,889.70/8,899.34
  6. Step 6: Final answer
    x = 7,065.68

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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.