Home / 1,820.04-2,729.16-693.90

Finding the Fourth Proportional to 1,820.04, 2,729.16 and 693.90

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Solution

The fourth proportional to 1,820.04, 2,729.16 and 693.90 is: 1,040.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,820.04 : 2,729.16 = 693.90 : x
  2. Step 2: Convert to fraction form
    1,820.04/2,729.16 = 693.90/x
  3. Step 3: Cross multiply
    1,820.04x = 2,729.16 × 693.90
  4. Step 4: Simplify right side
    1,820.04x = 1,893,764.12
  5. Step 5: Solve for x
    x = 1,893,764.12/1,820.04
  6. Step 6: Final answer
    x = 1,040.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.