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Finding the Fourth Proportional to 7,210.94, 9,951.10 and 3,898.94

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Solution

The fourth proportional to 7,210.94, 9,951.10 and 3,898.94 is: 5,380.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,210.94 : 9,951.10 = 3,898.94 : x
  2. Step 2: Convert to fraction form
    7,210.94/9,951.10 = 3,898.94/x
  3. Step 3: Cross multiply
    7,210.94x = 9,951.10 × 3,898.94
  4. Step 4: Simplify right side
    7,210.94x = 38,798,697.46
  5. Step 5: Solve for x
    x = 38,798,697.46/7,210.94
  6. Step 6: Final answer
    x = 5,380.53

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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.