Home / 7,011.21-9,675.20-3,867.40

Finding the Fourth Proportional to 7,011.21, 9,675.20 and 3,867.40

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Solution

The fourth proportional to 7,011.21, 9,675.20 and 3,867.40 is: 5,336.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,011.21 : 9,675.20 = 3,867.40 : x
  2. Step 2: Convert to fraction form
    7,011.21/9,675.20 = 3,867.40/x
  3. Step 3: Cross multiply
    7,011.21x = 9,675.20 × 3,867.40
  4. Step 4: Simplify right side
    7,011.21x = 37,417,853.96
  5. Step 5: Solve for x
    x = 37,417,853.96/7,011.21
  6. Step 6: Final answer
    x = 5,336.86

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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.