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Finding the Fourth Proportional to 4,890.94, 7,337.93 and 1,428.19

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Solution

The fourth proportional to 4,890.94, 7,337.93 and 1,428.19 is: 2,142.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,890.94 : 7,337.93 = 1,428.19 : x
  2. Step 2: Convert to fraction form
    4,890.94/7,337.93 = 1,428.19/x
  3. Step 3: Cross multiply
    4,890.94x = 7,337.93 × 1,428.19
  4. Step 4: Simplify right side
    4,890.94x = 10,479,932.76
  5. Step 5: Solve for x
    x = 10,479,932.76/4,890.94
  6. Step 6: Final answer
    x = 2,142.72

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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.