Home / 5,642.12-8,461.54-2,178.56

Finding the Fourth Proportional to 5,642.12, 8,461.54 and 2,178.56

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Solution

The fourth proportional to 5,642.12, 8,461.54 and 2,178.56 is: 3,267.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,642.12 : 8,461.54 = 2,178.56 : x
  2. Step 2: Convert to fraction form
    5,642.12/8,461.54 = 2,178.56/x
  3. Step 3: Cross multiply
    5,642.12x = 8,461.54 × 2,178.56
  4. Step 4: Simplify right side
    5,642.12x = 18,433,972.58
  5. Step 5: Solve for x
    x = 18,433,972.58/5,642.12
  6. Step 6: Final answer
    x = 3,267.21

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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.