Home / 1,571.89-2,356.82-913.90

Finding the Fourth Proportional to 1,571.89, 2,356.82 and 913.90

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Solution

The fourth proportional to 1,571.89, 2,356.82 and 913.90 is: 1,370.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,571.89 : 2,356.82 = 913.90 : x
  2. Step 2: Convert to fraction form
    1,571.89/2,356.82 = 913.90/x
  3. Step 3: Cross multiply
    1,571.89x = 2,356.82 × 913.90
  4. Step 4: Simplify right side
    1,571.89x = 2,153,881.44
  5. Step 5: Solve for x
    x = 2,153,881.44/1,571.89
  6. Step 6: Final answer
    x = 1,370.25

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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.