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Finding the Fourth Proportional to 1,704.40, 2,350.60 and 1,330.80

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Solution

The fourth proportional to 1,704.40, 2,350.60 and 1,330.80 is: 1,835.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,704.40 : 2,350.60 = 1,330.80 : x
  2. Step 2: Convert to fraction form
    1,704.40/2,350.60 = 1,330.80/x
  3. Step 3: Cross multiply
    1,704.40x = 2,350.60 × 1,330.80
  4. Step 4: Simplify right side
    1,704.40x = 3,128,178.48
  5. Step 5: Solve for x
    x = 3,128,178.48/1,704.40
  6. Step 6: Final answer
    x = 1,835.35

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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.