Home / 3,918.48-5,407.26-2,345.64

Finding the Fourth Proportional to 3,918.48, 5,407.26 and 2,345.64

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Solution

The fourth proportional to 3,918.48, 5,407.26 and 2,345.64 is: 3,236.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.48 : 5,407.26 = 2,345.64 : x
  2. Step 2: Convert to fraction form
    3,918.48/5,407.26 = 2,345.64/x
  3. Step 3: Cross multiply
    3,918.48x = 5,407.26 × 2,345.64
  4. Step 4: Simplify right side
    3,918.48x = 12,683,485.35
  5. Step 5: Solve for x
    x = 12,683,485.35/3,918.48
  6. Step 6: Final answer
    x = 3,236.84

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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.