Home / 1,152.14-1,578.02-1,084.79

Finding the Fourth Proportional to 1,152.14, 1,578.02 and 1,084.79

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Solution

The fourth proportional to 1,152.14, 1,578.02 and 1,084.79 is: 1,485.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,152.14 : 1,578.02 = 1,084.79 : x
  2. Step 2: Convert to fraction form
    1,152.14/1,578.02 = 1,084.79/x
  3. Step 3: Cross multiply
    1,152.14x = 1,578.02 × 1,084.79
  4. Step 4: Simplify right side
    1,152.14x = 1,711,818.84
  5. Step 5: Solve for x
    x = 1,711,818.84/1,152.14
  6. Step 6: Final answer
    x = 1,485.78

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.