Home / 1,646.48-2,276.52-1,438.94

Finding the Fourth Proportional to 1,646.48, 2,276.52 and 1,438.94

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Solution

The fourth proportional to 1,646.48, 2,276.52 and 1,438.94 is: 1,989.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,646.48 : 2,276.52 = 1,438.94 : x
  2. Step 2: Convert to fraction form
    1,646.48/2,276.52 = 1,438.94/x
  3. Step 3: Cross multiply
    1,646.48x = 2,276.52 × 1,438.94
  4. Step 4: Simplify right side
    1,646.48x = 3,275,775.69
  5. Step 5: Solve for x
    x = 3,275,775.69/1,646.48
  6. Step 6: Final answer
    x = 1,989.56

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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.