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Finding the Fourth Proportional to 8,079.56, 12,124.92 and 5,307.56

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Solution

The fourth proportional to 8,079.56, 12,124.92 and 5,307.56 is: 7,965.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,079.56 : 12,124.92 = 5,307.56 : x
  2. Step 2: Convert to fraction form
    8,079.56/12,124.92 = 5,307.56/x
  3. Step 3: Cross multiply
    8,079.56x = 12,124.92 × 5,307.56
  4. Step 4: Simplify right side
    8,079.56x = 64,353,740.40
  5. Step 5: Solve for x
    x = 64,353,740.40/8,079.56
  6. Step 6: Final answer
    x = 7,965.01

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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.