Home / 1,638.54-2,260.50-975.18

Finding the Fourth Proportional to 1,638.54, 2,260.50 and 975.18

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Solution

The fourth proportional to 1,638.54, 2,260.50 and 975.18 is: 1,345.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638.54 : 2,260.50 = 975.18 : x
  2. Step 2: Convert to fraction form
    1,638.54/2,260.50 = 975.18/x
  3. Step 3: Cross multiply
    1,638.54x = 2,260.50 × 975.18
  4. Step 4: Simplify right side
    1,638.54x = 2,204,394.39
  5. Step 5: Solve for x
    x = 2,204,394.39/1,638.54
  6. Step 6: Final answer
    x = 1,345.34

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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.