Home / 3,935.51-5,431.02-2,167.15

Finding the Fourth Proportional to 3,935.51, 5,431.02 and 2,167.15

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Solution

The fourth proportional to 3,935.51, 5,431.02 and 2,167.15 is: 2,990.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,935.51 : 5,431.02 = 2,167.15 : x
  2. Step 2: Convert to fraction form
    3,935.51/5,431.02 = 2,167.15/x
  3. Step 3: Cross multiply
    3,935.51x = 5,431.02 × 2,167.15
  4. Step 4: Simplify right side
    3,935.51x = 11,769,807.84
  5. Step 5: Solve for x
    x = 11,769,807.84/3,935.51
  6. Step 6: Final answer
    x = 2,990.67

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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.