Home / 1,571.34-2,356.80-417.18

Finding the Fourth Proportional to 1,571.34, 2,356.80 and 417.18

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Solution

The fourth proportional to 1,571.34, 2,356.80 and 417.18 is: 625.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,571.34 : 2,356.80 = 417.18 : x
  2. Step 2: Convert to fraction form
    1,571.34/2,356.80 = 417.18/x
  3. Step 3: Cross multiply
    1,571.34x = 2,356.80 × 417.18
  4. Step 4: Simplify right side
    1,571.34x = 983,209.82
  5. Step 5: Solve for x
    x = 983,209.82/1,571.34
  6. Step 6: Final answer
    x = 625.71

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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.