Home / 1,895.40-2,615.90-1,109.30

Finding the Fourth Proportional to 1,895.40, 2,615.90 and 1,109.30

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Solution

The fourth proportional to 1,895.40, 2,615.90 and 1,109.30 is: 1,530.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,895.40 : 2,615.90 = 1,109.30 : x
  2. Step 2: Convert to fraction form
    1,895.40/2,615.90 = 1,109.30/x
  3. Step 3: Cross multiply
    1,895.40x = 2,615.90 × 1,109.30
  4. Step 4: Simplify right side
    1,895.40x = 2,901,799.24
  5. Step 5: Solve for x
    x = 2,901,799.24/1,895.40
  6. Step 6: Final answer
    x = 1,530.97

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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.