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Finding the Fourth Proportional to 7,628.05, 10,521.27 and 7,000.61

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Solution

The fourth proportional to 7,628.05, 10,521.27 and 7,000.61 is: 9,655.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,628.05 : 10,521.27 = 7,000.61 : x
  2. Step 2: Convert to fraction form
    7,628.05/10,521.27 = 7,000.61/x
  3. Step 3: Cross multiply
    7,628.05x = 10,521.27 × 7,000.61
  4. Step 4: Simplify right side
    7,628.05x = 73,655,255.37
  5. Step 5: Solve for x
    x = 73,655,255.37/7,628.05
  6. Step 6: Final answer
    x = 9,655.85

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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.