Home / 1,528.23-2,291.40-1,039.80

Finding the Fourth Proportional to 1,528.23, 2,291.40 and 1,039.80

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Solution

The fourth proportional to 1,528.23, 2,291.40 and 1,039.80 is: 1,559.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,528.23 : 2,291.40 = 1,039.80 : x
  2. Step 2: Convert to fraction form
    1,528.23/2,291.40 = 1,039.80/x
  3. Step 3: Cross multiply
    1,528.23x = 2,291.40 × 1,039.80
  4. Step 4: Simplify right side
    1,528.23x = 2,382,597.72
  5. Step 5: Solve for x
    x = 2,382,597.72/1,528.23
  6. Step 6: Final answer
    x = 1,559.06

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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.