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Finding the Fourth Proportional to 3,392.61, 4,681.65 and 1,900.59

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Solution

The fourth proportional to 3,392.61, 4,681.65 and 1,900.59 is: 2,622.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,392.61 : 4,681.65 = 1,900.59 : x
  2. Step 2: Convert to fraction form
    3,392.61/4,681.65 = 1,900.59/x
  3. Step 3: Cross multiply
    3,392.61x = 4,681.65 × 1,900.59
  4. Step 4: Simplify right side
    3,392.61x = 8,897,897.17
  5. Step 5: Solve for x
    x = 8,897,897.17/3,392.61
  6. Step 6: Final answer
    x = 2,622.73

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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.