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Finding the Fourth Proportional to 7,855.92, 10,837.08 and 4,870.80

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Solution

The fourth proportional to 7,855.92, 10,837.08 and 4,870.80 is: 6,719.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,855.92 : 10,837.08 = 4,870.80 : x
  2. Step 2: Convert to fraction form
    7,855.92/10,837.08 = 4,870.80/x
  3. Step 3: Cross multiply
    7,855.92x = 10,837.08 × 4,870.80
  4. Step 4: Simplify right side
    7,855.92x = 52,785,249.26
  5. Step 5: Solve for x
    x = 52,785,249.26/7,855.92
  6. Step 6: Final answer
    x = 6,719.17

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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.