Home / 1,985.73-2,740.29-1,199.63

Finding the Fourth Proportional to 1,985.73, 2,740.29 and 1,199.63

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Solution

The fourth proportional to 1,985.73, 2,740.29 and 1,199.63 is: 1,655.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985.73 : 2,740.29 = 1,199.63 : x
  2. Step 2: Convert to fraction form
    1,985.73/2,740.29 = 1,199.63/x
  3. Step 3: Cross multiply
    1,985.73x = 2,740.29 × 1,199.63
  4. Step 4: Simplify right side
    1,985.73x = 3,287,320.39
  5. Step 5: Solve for x
    x = 3,287,320.39/1,985.73
  6. Step 6: Final answer
    x = 1,655.47

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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.