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Finding the Fourth Proportional to 2,397.90, 3,308.60 and 1,801.95

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Solution

The fourth proportional to 2,397.90, 3,308.60 and 1,801.95 is: 2,486.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,397.90 : 3,308.60 = 1,801.95 : x
  2. Step 2: Convert to fraction form
    2,397.90/3,308.60 = 1,801.95/x
  3. Step 3: Cross multiply
    2,397.90x = 3,308.60 × 1,801.95
  4. Step 4: Simplify right side
    2,397.90x = 5,961,913.73
  5. Step 5: Solve for x
    x = 5,961,913.73/2,397.90
  6. Step 6: Final answer
    x = 2,486.30

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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.