Home / 8,070.71-11,138.43-4,885.74

Finding the Fourth Proportional to 8,070.71, 11,138.43 and 4,885.74

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Solution

The fourth proportional to 8,070.71, 11,138.43 and 4,885.74 is: 6,742.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,070.71 : 11,138.43 = 4,885.74 : x
  2. Step 2: Convert to fraction form
    8,070.71/11,138.43 = 4,885.74/x
  3. Step 3: Cross multiply
    8,070.71x = 11,138.43 × 4,885.74
  4. Step 4: Simplify right side
    8,070.71x = 54,419,472.99
  5. Step 5: Solve for x
    x = 54,419,472.99/8,070.71
  6. Step 6: Final answer
    x = 6,742.84

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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.