Home / 3,101.40-4,649.40-1,869.30

Finding the Fourth Proportional to 3,101.40, 4,649.40 and 1,869.30

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Solution

The fourth proportional to 3,101.40, 4,649.40 and 1,869.30 is: 2,802.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,101.40 : 4,649.40 = 1,869.30 : x
  2. Step 2: Convert to fraction form
    3,101.40/4,649.40 = 1,869.30/x
  3. Step 3: Cross multiply
    3,101.40x = 4,649.40 × 1,869.30
  4. Step 4: Simplify right side
    3,101.40x = 8,691,123.42
  5. Step 5: Solve for x
    x = 8,691,123.42/3,101.40
  6. Step 6: Final answer
    x = 2,802.32

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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.