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Finding the Fourth Proportional to 3,065.55, 4,230.72 and 1,739.49

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Solution

The fourth proportional to 3,065.55, 4,230.72 and 1,739.49 is: 2,400.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,065.55 : 4,230.72 = 1,739.49 : x
  2. Step 2: Convert to fraction form
    3,065.55/4,230.72 = 1,739.49/x
  3. Step 3: Cross multiply
    3,065.55x = 4,230.72 × 1,739.49
  4. Step 4: Simplify right side
    3,065.55x = 7,359,295.13
  5. Step 5: Solve for x
    x = 7,359,295.13/3,065.55
  6. Step 6: Final answer
    x = 2,400.64

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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.