Home / 1,669.80-2,303.91-1,079.63

Finding the Fourth Proportional to 1,669.80, 2,303.91 and 1,079.63

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Solution

The fourth proportional to 1,669.80, 2,303.91 and 1,079.63 is: 1,489.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,669.80 : 2,303.91 = 1,079.63 : x
  2. Step 2: Convert to fraction form
    1,669.80/2,303.91 = 1,079.63/x
  3. Step 3: Cross multiply
    1,669.80x = 2,303.91 × 1,079.63
  4. Step 4: Simplify right side
    1,669.80x = 2,487,358.83
  5. Step 5: Solve for x
    x = 2,487,358.83/1,669.80
  6. Step 6: Final answer
    x = 1,489.61

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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.