Home / 1,960.29-2,703.81-1,428.63

Finding the Fourth Proportional to 1,960.29, 2,703.81 and 1,428.63

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Solution

The fourth proportional to 1,960.29, 2,703.81 and 1,428.63 is: 1,970.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,960.29 : 2,703.81 = 1,428.63 : x
  2. Step 2: Convert to fraction form
    1,960.29/2,703.81 = 1,428.63/x
  3. Step 3: Cross multiply
    1,960.29x = 2,703.81 × 1,428.63
  4. Step 4: Simplify right side
    1,960.29x = 3,862,744.08
  5. Step 5: Solve for x
    x = 3,862,744.08/1,960.29
  6. Step 6: Final answer
    x = 1,970.50

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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.