Home / 3,112.15-4,668.23-2,905.60

Finding the Fourth Proportional to 3,112.15, 4,668.23 and 2,905.60

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Solution

The fourth proportional to 3,112.15, 4,668.23 and 2,905.60 is: 4,358.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,112.15 : 4,668.23 = 2,905.60 : x
  2. Step 2: Convert to fraction form
    3,112.15/4,668.23 = 2,905.60/x
  3. Step 3: Cross multiply
    3,112.15x = 4,668.23 × 2,905.60
  4. Step 4: Simplify right side
    3,112.15x = 13,564,009.09
  5. Step 5: Solve for x
    x = 13,564,009.09/3,112.15
  6. Step 6: Final answer
    x = 4,358.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.