Home / 1,916.37-2,643.70-1,119.73

Finding the Fourth Proportional to 1,916.37, 2,643.70 and 1,119.73

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Solution

The fourth proportional to 1,916.37, 2,643.70 and 1,119.73 is: 1,544.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916.37 : 2,643.70 = 1,119.73 : x
  2. Step 2: Convert to fraction form
    1,916.37/2,643.70 = 1,119.73/x
  3. Step 3: Cross multiply
    1,916.37x = 2,643.70 × 1,119.73
  4. Step 4: Simplify right side
    1,916.37x = 2,960,224.02
  5. Step 5: Solve for x
    x = 2,960,224.02/1,916.37
  6. Step 6: Final answer
    x = 1,544.70

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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.