Home / 1,929.15-2,660.63-1,142.46

Finding the Fourth Proportional to 1,929.15, 2,660.63 and 1,142.46

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Solution

The fourth proportional to 1,929.15, 2,660.63 and 1,142.46 is: 1,575.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,929.15 : 2,660.63 = 1,142.46 : x
  2. Step 2: Convert to fraction form
    1,929.15/2,660.63 = 1,142.46/x
  3. Step 3: Cross multiply
    1,929.15x = 2,660.63 × 1,142.46
  4. Step 4: Simplify right side
    1,929.15x = 3,039,657.64
  5. Step 5: Solve for x
    x = 3,039,657.64/1,929.15
  6. Step 6: Final answer
    x = 1,575.65

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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.