Home / 1,985.67-2,740.28-1,199.25

Finding the Fourth Proportional to 1,985.67, 2,740.28 and 1,199.25

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Solution

The fourth proportional to 1,985.67, 2,740.28 and 1,199.25 is: 1,655.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985.67 : 2,740.28 = 1,199.25 : x
  2. Step 2: Convert to fraction form
    1,985.67/2,740.28 = 1,199.25/x
  3. Step 3: Cross multiply
    1,985.67x = 2,740.28 × 1,199.25
  4. Step 4: Simplify right side
    1,985.67x = 3,286,274.79
  5. Step 5: Solve for x
    x = 3,286,274.79/1,985.67
  6. Step 6: Final answer
    x = 1,655.00

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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.