Home / 1,036.44-1,556.28-990.27

Finding the Fourth Proportional to 1,036.44, 1,556.28 and 990.27

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Solution

The fourth proportional to 1,036.44, 1,556.28 and 990.27 is: 1,486.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,036.44 : 1,556.28 = 990.27 : x
  2. Step 2: Convert to fraction form
    1,036.44/1,556.28 = 990.27/x
  3. Step 3: Cross multiply
    1,036.44x = 1,556.28 × 990.27
  4. Step 4: Simplify right side
    1,036.44x = 1,541,137.40
  5. Step 5: Solve for x
    x = 1,541,137.40/1,036.44
  6. Step 6: Final answer
    x = 1,486.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.