Home / 1,938.10-2,674.06-1,228.68

Finding the Fourth Proportional to 1,938.10, 2,674.06 and 1,228.68

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Solution

The fourth proportional to 1,938.10, 2,674.06 and 1,228.68 is: 1,695.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.10 : 2,674.06 = 1,228.68 : x
  2. Step 2: Convert to fraction form
    1,938.10/2,674.06 = 1,228.68/x
  3. Step 3: Cross multiply
    1,938.10x = 2,674.06 × 1,228.68
  4. Step 4: Simplify right side
    1,938.10x = 3,285,564.04
  5. Step 5: Solve for x
    x = 3,285,564.04/1,938.10
  6. Step 6: Final answer
    x = 1,695.25

Related Problems

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Half scale
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Double scale
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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.