Home / 8,931.56-12,335.43-6,939.09

Finding the Fourth Proportional to 8,931.56, 12,335.43 and 6,939.09

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Solution

The fourth proportional to 8,931.56, 12,335.43 and 6,939.09 is: 9,583.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,931.56 : 12,335.43 = 6,939.09 : x
  2. Step 2: Convert to fraction form
    8,931.56/12,335.43 = 6,939.09/x
  3. Step 3: Cross multiply
    8,931.56x = 12,335.43 × 6,939.09
  4. Step 4: Simplify right side
    8,931.56x = 85,596,658.96
  5. Step 5: Solve for x
    x = 85,596,658.96/8,931.56
  6. Step 6: Final answer
    x = 9,583.62

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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.