Home / 1,985.23-2,740.46-1,199.13

Finding the Fourth Proportional to 1,985.23, 2,740.46 and 1,199.13

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Solution

The fourth proportional to 1,985.23, 2,740.46 and 1,199.13 is: 1,655.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985.23 : 2,740.46 = 1,199.13 : x
  2. Step 2: Convert to fraction form
    1,985.23/2,740.46 = 1,199.13/x
  3. Step 3: Cross multiply
    1,985.23x = 2,740.46 × 1,199.13
  4. Step 4: Simplify right side
    1,985.23x = 3,286,167.80
  5. Step 5: Solve for x
    x = 3,286,167.80/1,985.23
  6. Step 6: Final answer
    x = 1,655.31

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1.5x scale

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.