Home / 1,571.45-2,357.19-417.20

Finding the Fourth Proportional to 1,571.45, 2,357.19 and 417.20

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Solution

The fourth proportional to 1,571.45, 2,357.19 and 417.20 is: 625.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,571.45 : 2,357.19 = 417.20 : x
  2. Step 2: Convert to fraction form
    1,571.45/2,357.19 = 417.20/x
  3. Step 3: Cross multiply
    1,571.45x = 2,357.19 × 417.20
  4. Step 4: Simplify right side
    1,571.45x = 983,407.88
  5. Step 5: Solve for x
    x = 983,407.88/1,571.45
  6. Step 6: Final answer
    x = 625.80

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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.