Home / 1,815.13-2,504.75-1,029.30

Finding the Fourth Proportional to 1,815.13, 2,504.75 and 1,029.30

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Solution

The fourth proportional to 1,815.13, 2,504.75 and 1,029.30 is: 1,420.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,815.13 : 2,504.75 = 1,029.30 : x
  2. Step 2: Convert to fraction form
    1,815.13/2,504.75 = 1,029.30/x
  3. Step 3: Cross multiply
    1,815.13x = 2,504.75 × 1,029.30
  4. Step 4: Simplify right side
    1,815.13x = 2,578,139.18
  5. Step 5: Solve for x
    x = 2,578,139.18/1,815.13
  6. Step 6: Final answer
    x = 1,420.36

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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.