Home / 1,639.04-2,261.88-976.22

Finding the Fourth Proportional to 1,639.04, 2,261.88 and 976.22

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Solution

The fourth proportional to 1,639.04, 2,261.88 and 976.22 is: 1,347.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639.04 : 2,261.88 = 976.22 : x
  2. Step 2: Convert to fraction form
    1,639.04/2,261.88 = 976.22/x
  3. Step 3: Cross multiply
    1,639.04x = 2,261.88 × 976.22
  4. Step 4: Simplify right side
    1,639.04x = 2,208,092.49
  5. Step 5: Solve for x
    x = 2,208,092.49/1,639.04
  6. Step 6: Final answer
    x = 1,347.19

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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.