Home / 5,640.84-8,461.32-2,178.12

Finding the Fourth Proportional to 5,640.84, 8,461.32 and 2,178.12

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Solution

The fourth proportional to 5,640.84, 8,461.32 and 2,178.12 is: 3,267.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,640.84 : 8,461.32 = 2,178.12 : x
  2. Step 2: Convert to fraction form
    5,640.84/8,461.32 = 2,178.12/x
  3. Step 3: Cross multiply
    5,640.84x = 8,461.32 × 2,178.12
  4. Step 4: Simplify right side
    5,640.84x = 18,429,770.32
  5. Step 5: Solve for x
    x = 18,429,770.32/5,640.84
  6. Step 6: Final answer
    x = 3,267.20

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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.