Home / 1,325.36-1,825.77-1,115.57

Finding the Fourth Proportional to 1,325.36, 1,825.77 and 1,115.57

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Solution

The fourth proportional to 1,325.36, 1,825.77 and 1,115.57 is: 1,536.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,325.36 : 1,825.77 = 1,115.57 : x
  2. Step 2: Convert to fraction form
    1,325.36/1,825.77 = 1,115.57/x
  3. Step 3: Cross multiply
    1,325.36x = 1,825.77 × 1,115.57
  4. Step 4: Simplify right side
    1,325.36x = 2,036,782.99
  5. Step 5: Solve for x
    x = 2,036,782.99/1,325.36
  6. Step 6: Final answer
    x = 1,536.77

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1.5x scale

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.