Home / 7,920.28-11,898.90-4,635.70

Finding the Fourth Proportional to 7,920.28, 11,898.90 and 4,635.70

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Solution

The fourth proportional to 7,920.28, 11,898.90 and 4,635.70 is: 6,964.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,920.28 : 11,898.90 = 4,635.70 : x
  2. Step 2: Convert to fraction form
    7,920.28/11,898.90 = 4,635.70/x
  3. Step 3: Cross multiply
    7,920.28x = 11,898.90 × 4,635.70
  4. Step 4: Simplify right side
    7,920.28x = 55,159,730.73
  5. Step 5: Solve for x
    x = 55,159,730.73/7,920.28
  6. Step 6: Final answer
    x = 6,964.37

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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.