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Finding the Fourth Proportional to 1,698.01, 2,340.08 and 1,324.40

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Solution

The fourth proportional to 1,698.01, 2,340.08 and 1,324.40 is: 1,825.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,698.01 : 2,340.08 = 1,324.40 : x
  2. Step 2: Convert to fraction form
    1,698.01/2,340.08 = 1,324.40/x
  3. Step 3: Cross multiply
    1,698.01x = 2,340.08 × 1,324.40
  4. Step 4: Simplify right side
    1,698.01x = 3,099,201.95
  5. Step 5: Solve for x
    x = 3,099,201.95/1,698.01
  6. Step 6: Final answer
    x = 1,825.20

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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.