Home / 1,762.20-2,431.93-976.25

Finding the Fourth Proportional to 1,762.20, 2,431.93 and 976.25

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Solution

The fourth proportional to 1,762.20, 2,431.93 and 976.25 is: 1,347.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,762.20 : 2,431.93 = 976.25 : x
  2. Step 2: Convert to fraction form
    1,762.20/2,431.93 = 976.25/x
  3. Step 3: Cross multiply
    1,762.20x = 2,431.93 × 976.25
  4. Step 4: Simplify right side
    1,762.20x = 2,374,171.66
  5. Step 5: Solve for x
    x = 2,374,171.66/1,762.20
  6. Step 6: Final answer
    x = 1,347.28

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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.