Home / 3,058.40-4,220.48-1,661.16

Finding the Fourth Proportional to 3,058.40, 4,220.48 and 1,661.16

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Solution

The fourth proportional to 3,058.40, 4,220.48 and 1,661.16 is: 2,292.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,058.40 : 4,220.48 = 1,661.16 : x
  2. Step 2: Convert to fraction form
    3,058.40/4,220.48 = 1,661.16/x
  3. Step 3: Cross multiply
    3,058.40x = 4,220.48 × 1,661.16
  4. Step 4: Simplify right side
    3,058.40x = 7,010,892.56
  5. Step 5: Solve for x
    x = 7,010,892.56/3,058.40
  6. Step 6: Final answer
    x = 2,292.34

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Half scale
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Double scale
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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.