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Finding the Fourth Proportional to 3,392.55, 4,681.78 and 1,900.46

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Solution

The fourth proportional to 3,392.55, 4,681.78 and 1,900.46 is: 2,622.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,392.55 : 4,681.78 = 1,900.46 : x
  2. Step 2: Convert to fraction form
    3,392.55/4,681.78 = 1,900.46/x
  3. Step 3: Cross multiply
    3,392.55x = 4,681.78 × 1,900.46
  4. Step 4: Simplify right side
    3,392.55x = 8,897,512.21
  5. Step 5: Solve for x
    x = 8,897,512.21/3,392.55
  6. Step 6: Final answer
    x = 2,622.66

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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.