Home / 1,890.48-2,610.64-1,531.92

Finding the Fourth Proportional to 1,890.48, 2,610.64 and 1,531.92

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Solution

The fourth proportional to 1,890.48, 2,610.64 and 1,531.92 is: 2,115.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890.48 : 2,610.64 = 1,531.92 : x
  2. Step 2: Convert to fraction form
    1,890.48/2,610.64 = 1,531.92/x
  3. Step 3: Cross multiply
    1,890.48x = 2,610.64 × 1,531.92
  4. Step 4: Simplify right side
    1,890.48x = 3,999,291.63
  5. Step 5: Solve for x
    x = 3,999,291.63/1,890.48
  6. Step 6: Final answer
    x = 2,115.49

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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.