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Finding the Fourth Proportional to 7,151.88, 10,713.06 and 5,305.08

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Solution

The fourth proportional to 7,151.88, 10,713.06 and 5,305.08 is: 7,946.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,151.88 : 10,713.06 = 5,305.08 : x
  2. Step 2: Convert to fraction form
    7,151.88/10,713.06 = 5,305.08/x
  3. Step 3: Cross multiply
    7,151.88x = 10,713.06 × 5,305.08
  4. Step 4: Simplify right side
    7,151.88x = 56,833,640.34
  5. Step 5: Solve for x
    x = 56,833,640.34/7,151.88
  6. Step 6: Final answer
    x = 7,946.67

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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.