Home / 7,870.20-10,855.26-5,073

Finding the Fourth Proportional to 7,870.20, 10,855.26 and 5,073

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Solution

The fourth proportional to 7,870.20, 10,855.26 and 5,073 is: 6,997.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,870.20 : 10,855.26 = 5,073 : x
  2. Step 2: Convert to fraction form
    7,870.20/10,855.26 = 5,073/x
  3. Step 3: Cross multiply
    7,870.20x = 10,855.26 × 5,073
  4. Step 4: Simplify right side
    7,870.20x = 55,068,733.98
  5. Step 5: Solve for x
    x = 55,068,733.98/7,870.20
  6. Step 6: Final answer
    x = 6,997.12

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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.