Home / 3,215.60-4,823.40-1,571.30

Finding the Fourth Proportional to 3,215.60, 4,823.40 and 1,571.30

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Solution

The fourth proportional to 3,215.60, 4,823.40 and 1,571.30 is: 2,356.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,215.60 : 4,823.40 = 1,571.30 : x
  2. Step 2: Convert to fraction form
    3,215.60/4,823.40 = 1,571.30/x
  3. Step 3: Cross multiply
    3,215.60x = 4,823.40 × 1,571.30
  4. Step 4: Simplify right side
    3,215.60x = 7,579,008.42
  5. Step 5: Solve for x
    x = 7,579,008.42/3,215.60
  6. Step 6: Final answer
    x = 2,356.95

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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.