Home / 1,079.19-1,485.69-1,029.60

Finding the Fourth Proportional to 1,079.19, 1,485.69 and 1,029.60

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Solution

The fourth proportional to 1,079.19, 1,485.69 and 1,029.60 is: 1,417.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,079.19 : 1,485.69 = 1,029.60 : x
  2. Step 2: Convert to fraction form
    1,079.19/1,485.69 = 1,029.60/x
  3. Step 3: Cross multiply
    1,079.19x = 1,485.69 × 1,029.60
  4. Step 4: Simplify right side
    1,079.19x = 1,529,672.00
  5. Step 5: Solve for x
    x = 1,529,672.00/1,079.19
  6. Step 6: Final answer
    x = 1,417.42

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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.