Home / 4,689.76-7,029.75-2,221.64

Finding the Fourth Proportional to 4,689.76, 7,029.75 and 2,221.64

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Solution

The fourth proportional to 4,689.76, 7,029.75 and 2,221.64 is: 3,330.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,689.76 : 7,029.75 = 2,221.64 : x
  2. Step 2: Convert to fraction form
    4,689.76/7,029.75 = 2,221.64/x
  3. Step 3: Cross multiply
    4,689.76x = 7,029.75 × 2,221.64
  4. Step 4: Simplify right side
    4,689.76x = 15,617,573.79
  5. Step 5: Solve for x
    x = 15,617,573.79/4,689.76
  6. Step 6: Final answer
    x = 3,330.14

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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.