Home / 7,860.42-10,836.14-5,621.45

Finding the Fourth Proportional to 7,860.42, 10,836.14 and 5,621.45

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Solution

The fourth proportional to 7,860.42, 10,836.14 and 5,621.45 is: 7,749.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,860.42 : 10,836.14 = 5,621.45 : x
  2. Step 2: Convert to fraction form
    7,860.42/10,836.14 = 5,621.45/x
  3. Step 3: Cross multiply
    7,860.42x = 10,836.14 × 5,621.45
  4. Step 4: Simplify right side
    7,860.42x = 60,914,736.92
  5. Step 5: Solve for x
    x = 60,914,736.92/7,860.42
  6. Step 6: Final answer
    x = 7,749.55

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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.