Home / 1,639.54-2,262.77-976.39

Finding the Fourth Proportional to 1,639.54, 2,262.77 and 976.39

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Solution

The fourth proportional to 1,639.54, 2,262.77 and 976.39 is: 1,347.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639.54 : 2,262.77 = 976.39 : x
  2. Step 2: Convert to fraction form
    1,639.54/2,262.77 = 976.39/x
  3. Step 3: Cross multiply
    1,639.54x = 2,262.77 × 976.39
  4. Step 4: Simplify right side
    1,639.54x = 2,209,346.00
  5. Step 5: Solve for x
    x = 2,209,346.00/1,639.54
  6. Step 6: Final answer
    x = 1,347.54

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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.