Home / 5,420.02-8,123.36-3,081.98

Finding the Fourth Proportional to 5,420.02, 8,123.36 and 3,081.98

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Solution

The fourth proportional to 5,420.02, 8,123.36 and 3,081.98 is: 4,619.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.02 : 8,123.36 = 3,081.98 : x
  2. Step 2: Convert to fraction form
    5,420.02/8,123.36 = 3,081.98/x
  3. Step 3: Cross multiply
    5,420.02x = 8,123.36 × 3,081.98
  4. Step 4: Simplify right side
    5,420.02x = 25,036,017.64
  5. Step 5: Solve for x
    x = 25,036,017.64/5,420.02
  6. Step 6: Final answer
    x = 4,619.18

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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.