Home / 1,571.58-2,355.03-1,157.40

Finding the Fourth Proportional to 1,571.58, 2,355.03 and 1,157.40

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Solution

The fourth proportional to 1,571.58, 2,355.03 and 1,157.40 is: 1,734.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,571.58 : 2,355.03 = 1,157.40 : x
  2. Step 2: Convert to fraction form
    1,571.58/2,355.03 = 1,157.40/x
  3. Step 3: Cross multiply
    1,571.58x = 2,355.03 × 1,157.40
  4. Step 4: Simplify right side
    1,571.58x = 2,725,711.72
  5. Step 5: Solve for x
    x = 2,725,711.72/1,571.58
  6. Step 6: Final answer
    x = 1,734.38

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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.