Home / 4,920.88-7,378.14-2,420.32

Finding the Fourth Proportional to 4,920.88, 7,378.14 and 2,420.32

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Solution

The fourth proportional to 4,920.88, 7,378.14 and 2,420.32 is: 3,628.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,920.88 : 7,378.14 = 2,420.32 : x
  2. Step 2: Convert to fraction form
    4,920.88/7,378.14 = 2,420.32/x
  3. Step 3: Cross multiply
    4,920.88x = 7,378.14 × 2,420.32
  4. Step 4: Simplify right side
    4,920.88x = 17,857,459.80
  5. Step 5: Solve for x
    x = 17,857,459.80/4,920.88
  6. Step 6: Final answer
    x = 3,628.92

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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.