Home / 1,739.81-2,398.21-1,318.47

Finding the Fourth Proportional to 1,739.81, 2,398.21 and 1,318.47

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Solution

The fourth proportional to 1,739.81, 2,398.21 and 1,318.47 is: 1,817.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,739.81 : 2,398.21 = 1,318.47 : x
  2. Step 2: Convert to fraction form
    1,739.81/2,398.21 = 1,318.47/x
  3. Step 3: Cross multiply
    1,739.81x = 2,398.21 × 1,318.47
  4. Step 4: Simplify right side
    1,739.81x = 3,161,961.35
  5. Step 5: Solve for x
    x = 3,161,961.35/1,739.81
  6. Step 6: Final answer
    x = 1,817.42

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1.5x scale

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.