Home / 3,859.11-5,326.47-2,740.40

Finding the Fourth Proportional to 3,859.11, 5,326.47 and 2,740.40

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Solution

The fourth proportional to 3,859.11, 5,326.47 and 2,740.40 is: 3,782.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,859.11 : 5,326.47 = 2,740.40 : x
  2. Step 2: Convert to fraction form
    3,859.11/5,326.47 = 2,740.40/x
  3. Step 3: Cross multiply
    3,859.11x = 5,326.47 × 2,740.40
  4. Step 4: Simplify right side
    3,859.11x = 14,596,658.39
  5. Step 5: Solve for x
    x = 14,596,658.39/3,859.11
  6. Step 6: Final answer
    x = 3,782.39

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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.