Home / 1,638.48-2,458.02-1,489.93

Finding the Fourth Proportional to 1,638.48, 2,458.02 and 1,489.93

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Solution

The fourth proportional to 1,638.48, 2,458.02 and 1,489.93 is: 2,235.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638.48 : 2,458.02 = 1,489.93 : x
  2. Step 2: Convert to fraction form
    1,638.48/2,458.02 = 1,489.93/x
  3. Step 3: Cross multiply
    1,638.48x = 2,458.02 × 1,489.93
  4. Step 4: Simplify right side
    1,638.48x = 3,662,272.99
  5. Step 5: Solve for x
    x = 3,662,272.99/1,638.48
  6. Step 6: Final answer
    x = 2,235.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.