Home / 1,571.15-2,355.18-694.13

Finding the Fourth Proportional to 1,571.15, 2,355.18 and 694.13

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Solution

The fourth proportional to 1,571.15, 2,355.18 and 694.13 is: 1,040.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,571.15 : 2,355.18 = 694.13 : x
  2. Step 2: Convert to fraction form
    1,571.15/2,355.18 = 694.13/x
  3. Step 3: Cross multiply
    1,571.15x = 2,355.18 × 694.13
  4. Step 4: Simplify right side
    1,571.15x = 1,634,801.09
  5. Step 5: Solve for x
    x = 1,634,801.09/1,571.15
  6. Step 6: Final answer
    x = 1,040.51

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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.