Home / 2,090.78-2,887.23-1,346.03

Finding the Fourth Proportional to 2,090.78, 2,887.23 and 1,346.03

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Solution

The fourth proportional to 2,090.78, 2,887.23 and 1,346.03 is: 1,858.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,090.78 : 2,887.23 = 1,346.03 : x
  2. Step 2: Convert to fraction form
    2,090.78/2,887.23 = 1,346.03/x
  3. Step 3: Cross multiply
    2,090.78x = 2,887.23 × 1,346.03
  4. Step 4: Simplify right side
    2,090.78x = 3,886,305.41
  5. Step 5: Solve for x
    x = 3,886,305.41/2,090.78
  6. Step 6: Final answer
    x = 1,858.78

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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.