Home / 1,820.32-2,729.76-1,175.20

Finding the Fourth Proportional to 1,820.32, 2,729.76 and 1,175.20

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Solution

The fourth proportional to 1,820.32, 2,729.76 and 1,175.20 is: 1,762.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,820.32 : 2,729.76 = 1,175.20 : x
  2. Step 2: Convert to fraction form
    1,820.32/2,729.76 = 1,175.20/x
  3. Step 3: Cross multiply
    1,820.32x = 2,729.76 × 1,175.20
  4. Step 4: Simplify right side
    1,820.32x = 3,208,013.95
  5. Step 5: Solve for x
    x = 3,208,013.95/1,820.32
  6. Step 6: Final answer
    x = 1,762.34

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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.