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Finding the Fourth Proportional to 2,485.69, 3,425.10 and 1,776.95

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Solution

The fourth proportional to 2,485.69, 3,425.10 and 1,776.95 is: 2,448.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,485.69 : 3,425.10 = 1,776.95 : x
  2. Step 2: Convert to fraction form
    2,485.69/3,425.10 = 1,776.95/x
  3. Step 3: Cross multiply
    2,485.69x = 3,425.10 × 1,776.95
  4. Step 4: Simplify right side
    2,485.69x = 6,086,249.76
  5. Step 5: Solve for x
    x = 6,086,249.76/2,485.69
  6. Step 6: Final answer
    x = 2,448.52

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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.