Home / 1,533.76-2,116.67-936.68

Finding the Fourth Proportional to 1,533.76, 2,116.67 and 936.68

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Solution

The fourth proportional to 1,533.76, 2,116.67 and 936.68 is: 1,292.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,533.76 : 2,116.67 = 936.68 : x
  2. Step 2: Convert to fraction form
    1,533.76/2,116.67 = 936.68/x
  3. Step 3: Cross multiply
    1,533.76x = 2,116.67 × 936.68
  4. Step 4: Simplify right side
    1,533.76x = 1,982,627.19
  5. Step 5: Solve for x
    x = 1,982,627.19/1,533.76
  6. Step 6: Final answer
    x = 1,292.66

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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.