Home / 1,947.16-2,686.44-1,283.76

Finding the Fourth Proportional to 1,947.16, 2,686.44 and 1,283.76

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Solution

The fourth proportional to 1,947.16, 2,686.44 and 1,283.76 is: 1,771.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,947.16 : 2,686.44 = 1,283.76 : x
  2. Step 2: Convert to fraction form
    1,947.16/2,686.44 = 1,283.76/x
  3. Step 3: Cross multiply
    1,947.16x = 2,686.44 × 1,283.76
  4. Step 4: Simplify right side
    1,947.16x = 3,448,744.21
  5. Step 5: Solve for x
    x = 3,448,744.21/1,947.16
  6. Step 6: Final answer
    x = 1,771.17

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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.