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Finding the Fourth Proportional to 3,717.99, 5,130.95 and 2,039.40

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Solution

The fourth proportional to 3,717.99, 5,130.95 and 2,039.40 is: 2,814.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,717.99 : 5,130.95 = 2,039.40 : x
  2. Step 2: Convert to fraction form
    3,717.99/5,130.95 = 2,039.40/x
  3. Step 3: Cross multiply
    3,717.99x = 5,130.95 × 2,039.40
  4. Step 4: Simplify right side
    3,717.99x = 10,464,045.29
  5. Step 5: Solve for x
    x = 10,464,045.29/3,717.99
  6. Step 6: Final answer
    x = 2,814.44

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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.