Home / 3,390.81-4,674.41-2,271.34

Finding the Fourth Proportional to 3,390.81, 4,674.41 and 2,271.34

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Solution

The fourth proportional to 3,390.81, 4,674.41 and 2,271.34 is: 3,131.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.81 : 4,674.41 = 2,271.34 : x
  2. Step 2: Convert to fraction form
    3,390.81/4,674.41 = 2,271.34/x
  3. Step 3: Cross multiply
    3,390.81x = 4,674.41 × 2,271.34
  4. Step 4: Simplify right side
    3,390.81x = 10,617,177.41
  5. Step 5: Solve for x
    x = 10,617,177.41/3,390.81
  6. Step 6: Final answer
    x = 3,131.16

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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.