Home / 2,312.45-3,192.75-1,780.41

Finding the Fourth Proportional to 2,312.45, 3,192.75 and 1,780.41

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Solution

The fourth proportional to 2,312.45, 3,192.75 and 1,780.41 is: 2,458.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,312.45 : 3,192.75 = 1,780.41 : x
  2. Step 2: Convert to fraction form
    2,312.45/3,192.75 = 1,780.41/x
  3. Step 3: Cross multiply
    2,312.45x = 3,192.75 × 1,780.41
  4. Step 4: Simplify right side
    2,312.45x = 5,684,416.00
  5. Step 5: Solve for x
    x = 5,684,416.00/2,312.45
  6. Step 6: Final answer
    x = 2,458.18

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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.