Home / 1,815.81-2,505.85-1,029.84

Finding the Fourth Proportional to 1,815.81, 2,505.85 and 1,029.84

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Solution

The fourth proportional to 1,815.81, 2,505.85 and 1,029.84 is: 1,421.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,815.81 : 2,505.85 = 1,029.84 : x
  2. Step 2: Convert to fraction form
    1,815.81/2,505.85 = 1,029.84/x
  3. Step 3: Cross multiply
    1,815.81x = 2,505.85 × 1,029.84
  4. Step 4: Simplify right side
    1,815.81x = 2,580,624.56
  5. Step 5: Solve for x
    x = 2,580,624.56/1,815.81
  6. Step 6: Final answer
    x = 1,421.20

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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.