Home / 5,320.32-7,980.84-1,808.88

Finding the Fourth Proportional to 5,320.32, 7,980.84 and 1,808.88

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Solution

The fourth proportional to 5,320.32, 7,980.84 and 1,808.88 is: 2,713.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,320.32 : 7,980.84 = 1,808.88 : x
  2. Step 2: Convert to fraction form
    5,320.32/7,980.84 = 1,808.88/x
  3. Step 3: Cross multiply
    5,320.32x = 7,980.84 × 1,808.88
  4. Step 4: Simplify right side
    5,320.32x = 14,436,381.86
  5. Step 5: Solve for x
    x = 14,436,381.86/5,320.32
  6. Step 6: Final answer
    x = 2,713.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.