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Finding the Fourth Proportional to 3,478.84, 4,800.93 and 1,986.77

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Solution

The fourth proportional to 3,478.84, 4,800.93 and 1,986.77 is: 2,741.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478.84 : 4,800.93 = 1,986.77 : x
  2. Step 2: Convert to fraction form
    3,478.84/4,800.93 = 1,986.77/x
  3. Step 3: Cross multiply
    3,478.84x = 4,800.93 × 1,986.77
  4. Step 4: Simplify right side
    3,478.84x = 9,538,343.70
  5. Step 5: Solve for x
    x = 9,538,343.70/3,478.84
  6. Step 6: Final answer
    x = 2,741.82

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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.