Home / 2,913.36-4,021.56-2,133.60

Finding the Fourth Proportional to 2,913.36, 4,021.56 and 2,133.60

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Solution

The fourth proportional to 2,913.36, 4,021.56 and 2,133.60 is: 2,945.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,913.36 : 4,021.56 = 2,133.60 : x
  2. Step 2: Convert to fraction form
    2,913.36/4,021.56 = 2,133.60/x
  3. Step 3: Cross multiply
    2,913.36x = 4,021.56 × 2,133.60
  4. Step 4: Simplify right side
    2,913.36x = 8,580,400.42
  5. Step 5: Solve for x
    x = 8,580,400.42/2,913.36
  6. Step 6: Final answer
    x = 2,945.19

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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.