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Finding the Fourth Proportional to 3,953.99, 5,918.68 and 2,490.07

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Solution

The fourth proportional to 3,953.99, 5,918.68 and 2,490.07 is: 3,727.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,953.99 : 5,918.68 = 2,490.07 : x
  2. Step 2: Convert to fraction form
    3,953.99/5,918.68 = 2,490.07/x
  3. Step 3: Cross multiply
    3,953.99x = 5,918.68 × 2,490.07
  4. Step 4: Simplify right side
    3,953.99x = 14,737,885.46
  5. Step 5: Solve for x
    x = 14,737,885.46/3,953.99
  6. Step 6: Final answer
    x = 3,727.35

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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.