Home / 1,815.28-2,505.14-1,029.38

Finding the Fourth Proportional to 1,815.28, 2,505.14 and 1,029.38

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Solution

The fourth proportional to 1,815.28, 2,505.14 and 1,029.38 is: 1,420.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,815.28 : 2,505.14 = 1,029.38 : x
  2. Step 2: Convert to fraction form
    1,815.28/2,505.14 = 1,029.38/x
  3. Step 3: Cross multiply
    1,815.28x = 2,505.14 × 1,029.38
  4. Step 4: Simplify right side
    1,815.28x = 2,578,741.01
  5. Step 5: Solve for x
    x = 2,578,741.01/1,815.28
  6. Step 6: Final answer
    x = 1,420.57

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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.