Home / 4,920.45-7,380.12-1,457.43

Finding the Fourth Proportional to 4,920.45, 7,380.12 and 1,457.43

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Solution

The fourth proportional to 4,920.45, 7,380.12 and 1,457.43 is: 2,185.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,920.45 : 7,380.12 = 1,457.43 : x
  2. Step 2: Convert to fraction form
    4,920.45/7,380.12 = 1,457.43/x
  3. Step 3: Cross multiply
    4,920.45x = 7,380.12 × 1,457.43
  4. Step 4: Simplify right side
    4,920.45x = 10,756,008.29
  5. Step 5: Solve for x
    x = 10,756,008.29/4,920.45
  6. Step 6: Final answer
    x = 2,185.98

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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.