Home / 3,954.90-5,457.80-2,186.58

Finding the Fourth Proportional to 3,954.90, 5,457.80 and 2,186.58

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Solution

The fourth proportional to 3,954.90, 5,457.80 and 2,186.58 is: 3,017.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,954.90 : 5,457.80 = 2,186.58 : x
  2. Step 2: Convert to fraction form
    3,954.90/5,457.80 = 2,186.58/x
  3. Step 3: Cross multiply
    3,954.90x = 5,457.80 × 2,186.58
  4. Step 4: Simplify right side
    3,954.90x = 11,933,916.32
  5. Step 5: Solve for x
    x = 11,933,916.32/3,954.90
  6. Step 6: Final answer
    x = 3,017.50

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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.