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Finding the Fourth Proportional to 1,698.88, 2,344.40 and 1,000.32

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Solution

The fourth proportional to 1,698.88, 2,344.40 and 1,000.32 is: 1,380.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,698.88 : 2,344.40 = 1,000.32 : x
  2. Step 2: Convert to fraction form
    1,698.88/2,344.40 = 1,000.32/x
  3. Step 3: Cross multiply
    1,698.88x = 2,344.40 × 1,000.32
  4. Step 4: Simplify right side
    1,698.88x = 2,345,150.21
  5. Step 5: Solve for x
    x = 2,345,150.21/1,698.88
  6. Step 6: Final answer
    x = 1,380.41

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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.