Home / 3,928.02-5,420.16-2,530.50

Finding the Fourth Proportional to 3,928.02, 5,420.16 and 2,530.50

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Solution

The fourth proportional to 3,928.02, 5,420.16 and 2,530.50 is: 3,491.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.02 : 5,420.16 = 2,530.50 : x
  2. Step 2: Convert to fraction form
    3,928.02/5,420.16 = 2,530.50/x
  3. Step 3: Cross multiply
    3,928.02x = 5,420.16 × 2,530.50
  4. Step 4: Simplify right side
    3,928.02x = 13,715,714.88
  5. Step 5: Solve for x
    x = 13,715,714.88/3,928.02
  6. Step 6: Final answer
    x = 3,491.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.