Home / 1,393.40-2,079.19-1,360.46

Finding the Fourth Proportional to 1,393.40, 2,079.19 and 1,360.46

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Solution

The fourth proportional to 1,393.40, 2,079.19 and 1,360.46 is: 2,030.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,393.40 : 2,079.19 = 1,360.46 : x
  2. Step 2: Convert to fraction form
    1,393.40/2,079.19 = 1,360.46/x
  3. Step 3: Cross multiply
    1,393.40x = 2,079.19 × 1,360.46
  4. Step 4: Simplify right side
    1,393.40x = 2,828,654.83
  5. Step 5: Solve for x
    x = 2,828,654.83/1,393.40
  6. Step 6: Final answer
    x = 2,030.04

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.