Home / 3,655.36-5,040.30-2,990.08

Finding the Fourth Proportional to 3,655.36, 5,040.30 and 2,990.08

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Solution

The fourth proportional to 3,655.36, 5,040.30 and 2,990.08 is: 4,122.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,655.36 : 5,040.30 = 2,990.08 : x
  2. Step 2: Convert to fraction form
    3,655.36/5,040.30 = 2,990.08/x
  3. Step 3: Cross multiply
    3,655.36x = 5,040.30 × 2,990.08
  4. Step 4: Simplify right side
    3,655.36x = 15,070,900.22
  5. Step 5: Solve for x
    x = 15,070,900.22/3,655.36
  6. Step 6: Final answer
    x = 4,122.96

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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.