Home / 2,939.90-4,058.63-2,271.17

Finding the Fourth Proportional to 2,939.90, 4,058.63 and 2,271.17

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Solution

The fourth proportional to 2,939.90, 4,058.63 and 2,271.17 is: 3,135.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,939.90 : 4,058.63 = 2,271.17 : x
  2. Step 2: Convert to fraction form
    2,939.90/4,058.63 = 2,271.17/x
  3. Step 3: Cross multiply
    2,939.90x = 4,058.63 × 2,271.17
  4. Step 4: Simplify right side
    2,939.90x = 9,217,824.08
  5. Step 5: Solve for x
    x = 9,217,824.08/2,939.90
  6. Step 6: Final answer
    x = 3,135.43

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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.