Home / 1,528.36-2,290.10-879.56

Finding the Fourth Proportional to 1,528.36, 2,290.10 and 879.56

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Solution

The fourth proportional to 1,528.36, 2,290.10 and 879.56 is: 1,317.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,528.36 : 2,290.10 = 879.56 : x
  2. Step 2: Convert to fraction form
    1,528.36/2,290.10 = 879.56/x
  3. Step 3: Cross multiply
    1,528.36x = 2,290.10 × 879.56
  4. Step 4: Simplify right side
    1,528.36x = 2,014,280.36
  5. Step 5: Solve for x
    x = 2,014,280.36/1,528.36
  6. Step 6: Final answer
    x = 1,317.94

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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.