Home / 1,970.28-2,718.99-1,224.24

Finding the Fourth Proportional to 1,970.28, 2,718.99 and 1,224.24

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Solution

The fourth proportional to 1,970.28, 2,718.99 and 1,224.24 is: 1,689.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,970.28 : 2,718.99 = 1,224.24 : x
  2. Step 2: Convert to fraction form
    1,970.28/2,718.99 = 1,224.24/x
  3. Step 3: Cross multiply
    1,970.28x = 2,718.99 × 1,224.24
  4. Step 4: Simplify right side
    1,970.28x = 3,328,696.32
  5. Step 5: Solve for x
    x = 3,328,696.32/1,970.28
  6. Step 6: Final answer
    x = 1,689.45

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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.