Home / 3,559.13-4,911.60-1,987.23

Finding the Fourth Proportional to 3,559.13, 4,911.60 and 1,987.23

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Solution

The fourth proportional to 3,559.13, 4,911.60 and 1,987.23 is: 2,742.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,559.13 : 4,911.60 = 1,987.23 : x
  2. Step 2: Convert to fraction form
    3,559.13/4,911.60 = 1,987.23/x
  3. Step 3: Cross multiply
    3,559.13x = 4,911.60 × 1,987.23
  4. Step 4: Simplify right side
    3,559.13x = 9,760,478.87
  5. Step 5: Solve for x
    x = 9,760,478.87/3,559.13
  6. Step 6: Final answer
    x = 2,742.38

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Half scale
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Double scale
Find fourth proportional to 3,560.13, 4,912.98 and 1,988.23
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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.