Home / 3,130.44-4,320.50-1,803.89

Finding the Fourth Proportional to 3,130.44, 4,320.50 and 1,803.89

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Solution

The fourth proportional to 3,130.44, 4,320.50 and 1,803.89 is: 2,489.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.44 : 4,320.50 = 1,803.89 : x
  2. Step 2: Convert to fraction form
    3,130.44/4,320.50 = 1,803.89/x
  3. Step 3: Cross multiply
    3,130.44x = 4,320.50 × 1,803.89
  4. Step 4: Simplify right side
    3,130.44x = 7,793,676.12
  5. Step 5: Solve for x
    x = 7,793,676.12/3,130.44
  6. Step 6: Final answer
    x = 2,489.64

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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.