Home / 3,430.80-5,147.28-2,045.70

Finding the Fourth Proportional to 3,430.80, 5,147.28 and 2,045.70

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Solution

The fourth proportional to 3,430.80, 5,147.28 and 2,045.70 is: 3,069.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,430.80 : 5,147.28 = 2,045.70 : x
  2. Step 2: Convert to fraction form
    3,430.80/5,147.28 = 2,045.70/x
  3. Step 3: Cross multiply
    3,430.80x = 5,147.28 × 2,045.70
  4. Step 4: Simplify right side
    3,430.80x = 10,529,790.70
  5. Step 5: Solve for x
    x = 10,529,790.70/3,430.80
  6. Step 6: Final answer
    x = 3,069.19

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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.