Home / 1,815.18-2,504.97-1,029.21

Finding the Fourth Proportional to 1,815.18, 2,504.97 and 1,029.21

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Solution

The fourth proportional to 1,815.18, 2,504.97 and 1,029.21 is: 1,420.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,815.18 : 2,504.97 = 1,029.21 : x
  2. Step 2: Convert to fraction form
    1,815.18/2,504.97 = 1,029.21/x
  3. Step 3: Cross multiply
    1,815.18x = 2,504.97 × 1,029.21
  4. Step 4: Simplify right side
    1,815.18x = 2,578,140.17
  5. Step 5: Solve for x
    x = 2,578,140.17/1,815.18
  6. Step 6: Final answer
    x = 1,420.32

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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.