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Finding the Fourth Proportional to 1,905.95, 2,859.51 and 906.06

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Solution

The fourth proportional to 1,905.95, 2,859.51 and 906.06 is: 1,359.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,905.95 : 2,859.51 = 906.06 : x
  2. Step 2: Convert to fraction form
    1,905.95/2,859.51 = 906.06/x
  3. Step 3: Cross multiply
    1,905.95x = 2,859.51 × 906.06
  4. Step 4: Simplify right side
    1,905.95x = 2,590,868.80
  5. Step 5: Solve for x
    x = 2,590,868.80/1,905.95
  6. Step 6: Final answer
    x = 1,359.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.