Home / 1,533.30-2,115.96-834.68

Finding the Fourth Proportional to 1,533.30, 2,115.96 and 834.68

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Solution

The fourth proportional to 1,533.30, 2,115.96 and 834.68 is: 1,151.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,533.30 : 2,115.96 = 834.68 : x
  2. Step 2: Convert to fraction form
    1,533.30/2,115.96 = 834.68/x
  3. Step 3: Cross multiply
    1,533.30x = 2,115.96 × 834.68
  4. Step 4: Simplify right side
    1,533.30x = 1,766,149.22
  5. Step 5: Solve for x
    x = 1,766,149.22/1,533.30
  6. Step 6: Final answer
    x = 1,151.86

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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.