Home / 9,211.34-12,710.43-5,178.44

Finding the Fourth Proportional to 9,211.34, 12,710.43 and 5,178.44

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Solution

The fourth proportional to 9,211.34, 12,710.43 and 5,178.44 is: 7,145.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,211.34 : 12,710.43 = 5,178.44 : x
  2. Step 2: Convert to fraction form
    9,211.34/12,710.43 = 5,178.44/x
  3. Step 3: Cross multiply
    9,211.34x = 12,710.43 × 5,178.44
  4. Step 4: Simplify right side
    9,211.34x = 65,820,135.58
  5. Step 5: Solve for x
    x = 65,820,135.58/9,211.34
  6. Step 6: Final answer
    x = 7,145.56

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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.