Home / 1,760.60-2,643.30-1,395.80

Finding the Fourth Proportional to 1,760.60, 2,643.30 and 1,395.80

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Solution

The fourth proportional to 1,760.60, 2,643.30 and 1,395.80 is: 2,095.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,760.60 : 2,643.30 = 1,395.80 : x
  2. Step 2: Convert to fraction form
    1,760.60/2,643.30 = 1,395.80/x
  3. Step 3: Cross multiply
    1,760.60x = 2,643.30 × 1,395.80
  4. Step 4: Simplify right side
    1,760.60x = 3,689,518.14
  5. Step 5: Solve for x
    x = 3,689,518.14/1,760.60
  6. Step 6: Final answer
    x = 2,095.60

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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.