Home / 7,878.14-10,870.97-4,520.88

Finding the Fourth Proportional to 7,878.14, 10,870.97 and 4,520.88

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Solution

The fourth proportional to 7,878.14, 10,870.97 and 4,520.88 is: 6,238.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,878.14 : 10,870.97 = 4,520.88 : x
  2. Step 2: Convert to fraction form
    7,878.14/10,870.97 = 4,520.88/x
  3. Step 3: Cross multiply
    7,878.14x = 10,870.97 × 4,520.88
  4. Step 4: Simplify right side
    7,878.14x = 49,146,296.50
  5. Step 5: Solve for x
    x = 49,146,296.50/7,878.14
  6. Step 6: Final answer
    x = 6,238.32

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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.