Home / 3,807.48-5,254.38-2,128.98

Finding the Fourth Proportional to 3,807.48, 5,254.38 and 2,128.98

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Solution

The fourth proportional to 3,807.48, 5,254.38 and 2,128.98 is: 2,938.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,807.48 : 5,254.38 = 2,128.98 : x
  2. Step 2: Convert to fraction form
    3,807.48/5,254.38 = 2,128.98/x
  3. Step 3: Cross multiply
    3,807.48x = 5,254.38 × 2,128.98
  4. Step 4: Simplify right side
    3,807.48x = 11,186,469.93
  5. Step 5: Solve for x
    x = 11,186,469.93/3,807.48
  6. Step 6: Final answer
    x = 2,938.02

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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.