Home / 1,985.78-2,963.67-1,933.94

Finding the Fourth Proportional to 1,985.78, 2,963.67 and 1,933.94

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Solution

The fourth proportional to 1,985.78, 2,963.67 and 1,933.94 is: 2,886.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985.78 : 2,963.67 = 1,933.94 : x
  2. Step 2: Convert to fraction form
    1,985.78/2,963.67 = 1,933.94/x
  3. Step 3: Cross multiply
    1,985.78x = 2,963.67 × 1,933.94
  4. Step 4: Simplify right side
    1,985.78x = 5,731,550.29
  5. Step 5: Solve for x
    x = 5,731,550.29/1,985.78
  6. Step 6: Final answer
    x = 2,886.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.