Home / 3,140.81-4,331.91-2,301.21

Finding the Fourth Proportional to 3,140.81, 4,331.91 and 2,301.21

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Solution

The fourth proportional to 3,140.81, 4,331.91 and 2,301.21 is: 3,173.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.81 : 4,331.91 = 2,301.21 : x
  2. Step 2: Convert to fraction form
    3,140.81/4,331.91 = 2,301.21/x
  3. Step 3: Cross multiply
    3,140.81x = 4,331.91 × 2,301.21
  4. Step 4: Simplify right side
    3,140.81x = 9,968,643.24
  5. Step 5: Solve for x
    x = 9,968,643.24/3,140.81
  6. Step 6: Final answer
    x = 3,173.91

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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.