Home / 4,900.64-7,353.20-2,128.16

Finding the Fourth Proportional to 4,900.64, 7,353.20 and 2,128.16

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Solution

The fourth proportional to 4,900.64, 7,353.20 and 2,128.16 is: 3,193.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,900.64 : 7,353.20 = 2,128.16 : x
  2. Step 2: Convert to fraction form
    4,900.64/7,353.20 = 2,128.16/x
  3. Step 3: Cross multiply
    4,900.64x = 7,353.20 × 2,128.16
  4. Step 4: Simplify right side
    4,900.64x = 15,648,786.11
  5. Step 5: Solve for x
    x = 15,648,786.11/4,900.64
  6. Step 6: Final answer
    x = 3,193.21

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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.