Home / 7,860.05-10,839.45-5,166.51

Finding the Fourth Proportional to 7,860.05, 10,839.45 and 5,166.51

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Solution

The fourth proportional to 7,860.05, 10,839.45 and 5,166.51 is: 7,124.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,860.05 : 10,839.45 = 5,166.51 : x
  2. Step 2: Convert to fraction form
    7,860.05/10,839.45 = 5,166.51/x
  3. Step 3: Cross multiply
    7,860.05x = 10,839.45 × 5,166.51
  4. Step 4: Simplify right side
    7,860.05x = 56,002,046.79
  5. Step 5: Solve for x
    x = 56,002,046.79/7,860.05
  6. Step 6: Final answer
    x = 7,124.90

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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.