Home / 3,205.80-4,426.02-2,615.40

Finding the Fourth Proportional to 3,205.80, 4,426.02 and 2,615.40

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Solution

The fourth proportional to 3,205.80, 4,426.02 and 2,615.40 is: 3,610.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,205.80 : 4,426.02 = 2,615.40 : x
  2. Step 2: Convert to fraction form
    3,205.80/4,426.02 = 2,615.40/x
  3. Step 3: Cross multiply
    3,205.80x = 4,426.02 × 2,615.40
  4. Step 4: Simplify right side
    3,205.80x = 11,575,812.71
  5. Step 5: Solve for x
    x = 11,575,812.71/3,205.80
  6. Step 6: Final answer
    x = 3,610.90

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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.