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Finding the Fourth Proportional to 2,335.54, 3,485.09 and 2,128.54

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Solution

The fourth proportional to 2,335.54, 3,485.09 and 2,128.54 is: 3,176.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,335.54 : 3,485.09 = 2,128.54 : x
  2. Step 2: Convert to fraction form
    2,335.54/3,485.09 = 2,128.54/x
  3. Step 3: Cross multiply
    2,335.54x = 3,485.09 × 2,128.54
  4. Step 4: Simplify right side
    2,335.54x = 7,418,153.47
  5. Step 5: Solve for x
    x = 7,418,153.47/2,335.54
  6. Step 6: Final answer
    x = 3,176.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.