Home / 1,338.19-1,846.73-748.85

Finding the Fourth Proportional to 1,338.19, 1,846.73 and 748.85

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Solution

The fourth proportional to 1,338.19, 1,846.73 and 748.85 is: 1,033.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,338.19 : 1,846.73 = 748.85 : x
  2. Step 2: Convert to fraction form
    1,338.19/1,846.73 = 748.85/x
  3. Step 3: Cross multiply
    1,338.19x = 1,846.73 × 748.85
  4. Step 4: Simplify right side
    1,338.19x = 1,382,916.40
  5. Step 5: Solve for x
    x = 1,382,916.40/1,338.19
  6. Step 6: Final answer
    x = 1,033.42

Related Problems

Find fourth proportional to 669.09, 923.37 and 374.42
Half scale
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Double scale
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Similar ratio
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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.