Home / 1,638.52-2,260.08-1,133.48

Finding the Fourth Proportional to 1,638.52, 2,260.08 and 1,133.48

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Solution

The fourth proportional to 1,638.52, 2,260.08 and 1,133.48 is: 1,563.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638.52 : 2,260.08 = 1,133.48 : x
  2. Step 2: Convert to fraction form
    1,638.52/2,260.08 = 1,133.48/x
  3. Step 3: Cross multiply
    1,638.52x = 2,260.08 × 1,133.48
  4. Step 4: Simplify right side
    1,638.52x = 2,561,761.13
  5. Step 5: Solve for x
    x = 2,561,761.13/1,638.52
  6. Step 6: Final answer
    x = 1,563.46

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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.