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Finding the Fourth Proportional to 3,483.84, 4,808.64 and 2,156.79

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Solution

The fourth proportional to 3,483.84, 4,808.64 and 2,156.79 is: 2,976.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,483.84 : 4,808.64 = 2,156.79 : x
  2. Step 2: Convert to fraction form
    3,483.84/4,808.64 = 2,156.79/x
  3. Step 3: Cross multiply
    3,483.84x = 4,808.64 × 2,156.79
  4. Step 4: Simplify right side
    3,483.84x = 10,371,226.67
  5. Step 5: Solve for x
    x = 10,371,226.67/3,483.84
  6. Step 6: Final answer
    x = 2,976.95

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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.