Home / 1,729.47-2,386.36-1,641.89

Finding the Fourth Proportional to 1,729.47, 2,386.36 and 1,641.89

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Solution

The fourth proportional to 1,729.47, 2,386.36 and 1,641.89 is: 2,265.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,729.47 : 2,386.36 = 1,641.89 : x
  2. Step 2: Convert to fraction form
    1,729.47/2,386.36 = 1,641.89/x
  3. Step 3: Cross multiply
    1,729.47x = 2,386.36 × 1,641.89
  4. Step 4: Simplify right side
    1,729.47x = 3,918,140.62
  5. Step 5: Solve for x
    x = 3,918,140.62/1,729.47
  6. Step 6: Final answer
    x = 2,265.52

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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.