Home / 1,815.72-2,505.60-1,029.82

Finding the Fourth Proportional to 1,815.72, 2,505.60 and 1,029.82

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Solution

The fourth proportional to 1,815.72, 2,505.60 and 1,029.82 is: 1,421.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,815.72 : 2,505.60 = 1,029.82 : x
  2. Step 2: Convert to fraction form
    1,815.72/2,505.60 = 1,029.82/x
  3. Step 3: Cross multiply
    1,815.72x = 2,505.60 × 1,029.82
  4. Step 4: Simplify right side
    1,815.72x = 2,580,316.99
  5. Step 5: Solve for x
    x = 2,580,316.99/1,815.72
  6. Step 6: Final answer
    x = 1,421.10

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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.