Home / 3,916.93-5,405.30-2,148.60

Finding the Fourth Proportional to 3,916.93, 5,405.30 and 2,148.60

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Solution

The fourth proportional to 3,916.93, 5,405.30 and 2,148.60 is: 2,965.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,916.93 : 5,405.30 = 2,148.60 : x
  2. Step 2: Convert to fraction form
    3,916.93/5,405.30 = 2,148.60/x
  3. Step 3: Cross multiply
    3,916.93x = 5,405.30 × 2,148.60
  4. Step 4: Simplify right side
    3,916.93x = 11,613,832.95
  5. Step 5: Solve for x
    x = 11,613,832.95/3,916.93
  6. Step 6: Final answer
    x = 2,965.03

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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.