Home / 2,720.80-4,070.40-2,359.60

Finding the Fourth Proportional to 2,720.80, 4,070.40 and 2,359.60

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Solution

The fourth proportional to 2,720.80, 4,070.40 and 2,359.60 is: 3,530.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,720.80 : 4,070.40 = 2,359.60 : x
  2. Step 2: Convert to fraction form
    2,720.80/4,070.40 = 2,359.60/x
  3. Step 3: Cross multiply
    2,720.80x = 4,070.40 × 2,359.60
  4. Step 4: Simplify right side
    2,720.80x = 9,604,515.84
  5. Step 5: Solve for x
    x = 9,604,515.84/2,720.80
  6. Step 6: Final answer
    x = 3,530.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.