Home / 3,178.02-4,387.70-2,589.96

Finding the Fourth Proportional to 3,178.02, 4,387.70 and 2,589.96

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Solution

The fourth proportional to 3,178.02, 4,387.70 and 2,589.96 is: 3,575.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.02 : 4,387.70 = 2,589.96 : x
  2. Step 2: Convert to fraction form
    3,178.02/4,387.70 = 2,589.96/x
  3. Step 3: Cross multiply
    3,178.02x = 4,387.70 × 2,589.96
  4. Step 4: Simplify right side
    3,178.02x = 11,363,967.49
  5. Step 5: Solve for x
    x = 11,363,967.49/3,178.02
  6. Step 6: Final answer
    x = 3,575.80

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1.5x scale

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.