Home / 3,538.48-4,884.24-2,142.40

Finding the Fourth Proportional to 3,538.48, 4,884.24 and 2,142.40

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Solution

The fourth proportional to 3,538.48, 4,884.24 and 2,142.40 is: 2,957.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,538.48 : 4,884.24 = 2,142.40 : x
  2. Step 2: Convert to fraction form
    3,538.48/4,884.24 = 2,142.40/x
  3. Step 3: Cross multiply
    3,538.48x = 4,884.24 × 2,142.40
  4. Step 4: Simplify right side
    3,538.48x = 10,463,995.78
  5. Step 5: Solve for x
    x = 10,463,995.78/3,538.48
  6. Step 6: Final answer
    x = 2,957.20

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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.