Home / 2,839.19-3,916.89-1,953.45

Finding the Fourth Proportional to 2,839.19, 3,916.89 and 1,953.45

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Solution

The fourth proportional to 2,839.19, 3,916.89 and 1,953.45 is: 2,694.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,839.19 : 3,916.89 = 1,953.45 : x
  2. Step 2: Convert to fraction form
    2,839.19/3,916.89 = 1,953.45/x
  3. Step 3: Cross multiply
    2,839.19x = 3,916.89 × 1,953.45
  4. Step 4: Simplify right side
    2,839.19x = 7,651,448.77
  5. Step 5: Solve for x
    x = 7,651,448.77/2,839.19
  6. Step 6: Final answer
    x = 2,694.95

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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.