Home / 3,271.08-4,903.85-1,420.80

Finding the Fourth Proportional to 3,271.08, 4,903.85 and 1,420.80

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Solution

The fourth proportional to 3,271.08, 4,903.85 and 1,420.80 is: 2,130.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,271.08 : 4,903.85 = 1,420.80 : x
  2. Step 2: Convert to fraction form
    3,271.08/4,903.85 = 1,420.80/x
  3. Step 3: Cross multiply
    3,271.08x = 4,903.85 × 1,420.80
  4. Step 4: Simplify right side
    3,271.08x = 6,967,390.08
  5. Step 5: Solve for x
    x = 6,967,390.08/3,271.08
  6. Step 6: Final answer
    x = 2,130.00

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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.