Home / 3,935.29-5,428.96-2,440.21

Finding the Fourth Proportional to 3,935.29, 5,428.96 and 2,440.21

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Solution

The fourth proportional to 3,935.29, 5,428.96 and 2,440.21 is: 3,366.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,935.29 : 5,428.96 = 2,440.21 : x
  2. Step 2: Convert to fraction form
    3,935.29/5,428.96 = 2,440.21/x
  3. Step 3: Cross multiply
    3,935.29x = 5,428.96 × 2,440.21
  4. Step 4: Simplify right side
    3,935.29x = 13,247,802.48
  5. Step 5: Solve for x
    x = 13,247,802.48/3,935.29
  6. Step 6: Final answer
    x = 3,366.41

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Double scale
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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.