Home / 3,430.69-5,146.04-1,380.13

Finding the Fourth Proportional to 3,430.69, 5,146.04 and 1,380.13

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Solution

The fourth proportional to 3,430.69, 5,146.04 and 1,380.13 is: 2,070.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,430.69 : 5,146.04 = 1,380.13 : x
  2. Step 2: Convert to fraction form
    3,430.69/5,146.04 = 1,380.13/x
  3. Step 3: Cross multiply
    3,430.69x = 5,146.04 × 1,380.13
  4. Step 4: Simplify right side
    3,430.69x = 7,102,197.28
  5. Step 5: Solve for x
    x = 7,102,197.28/3,430.69
  6. Step 6: Final answer
    x = 2,070.20

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1.5x scale

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.