Home / 2,126.36-2,933.67-1,286.74

Finding the Fourth Proportional to 2,126.36, 2,933.67 and 1,286.74

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Solution

The fourth proportional to 2,126.36, 2,933.67 and 1,286.74 is: 1,775.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,126.36 : 2,933.67 = 1,286.74 : x
  2. Step 2: Convert to fraction form
    2,126.36/2,933.67 = 1,286.74/x
  3. Step 3: Cross multiply
    2,126.36x = 2,933.67 × 1,286.74
  4. Step 4: Simplify right side
    2,126.36x = 3,774,875.41
  5. Step 5: Solve for x
    x = 3,774,875.41/2,126.36
  6. Step 6: Final answer
    x = 1,775.28

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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.