Home / 7,882.20-10,870.62-5,621.22

Finding the Fourth Proportional to 7,882.20, 10,870.62 and 5,621.22

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Solution

The fourth proportional to 7,882.20, 10,870.62 and 5,621.22 is: 7,752.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,882.20 : 10,870.62 = 5,621.22 : x
  2. Step 2: Convert to fraction form
    7,882.20/10,870.62 = 5,621.22/x
  3. Step 3: Cross multiply
    7,882.20x = 10,870.62 × 5,621.22
  4. Step 4: Simplify right side
    7,882.20x = 61,106,146.56
  5. Step 5: Solve for x
    x = 61,106,146.56/7,882.20
  6. Step 6: Final answer
    x = 7,752.42

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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.