Home / 3,814.24-5,690.64-3,398.40

Finding the Fourth Proportional to 3,814.24, 5,690.64 and 3,398.40

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Solution

The fourth proportional to 3,814.24, 5,690.64 and 3,398.40 is: 5,070.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,814.24 : 5,690.64 = 3,398.40 : x
  2. Step 2: Convert to fraction form
    3,814.24/5,690.64 = 3,398.40/x
  3. Step 3: Cross multiply
    3,814.24x = 5,690.64 × 3,398.40
  4. Step 4: Simplify right side
    3,814.24x = 19,339,070.98
  5. Step 5: Solve for x
    x = 19,339,070.98/3,814.24
  6. Step 6: Final answer
    x = 5,070.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.