Home / 1,292.30-1,929.69-1,015.28

Finding the Fourth Proportional to 1,292.30, 1,929.69 and 1,015.28

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Solution

The fourth proportional to 1,292.30, 1,929.69 and 1,015.28 is: 1,516.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292.30 : 1,929.69 = 1,015.28 : x
  2. Step 2: Convert to fraction form
    1,292.30/1,929.69 = 1,015.28/x
  3. Step 3: Cross multiply
    1,292.30x = 1,929.69 × 1,015.28
  4. Step 4: Simplify right side
    1,292.30x = 1,959,166.01
  5. Step 5: Solve for x
    x = 1,959,166.01/1,292.30
  6. Step 6: Final answer
    x = 1,516.04

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.