Home / 4,900.36-7,354.18-1,978.68

Finding the Fourth Proportional to 4,900.36, 7,354.18 and 1,978.68

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Solution

The fourth proportional to 4,900.36, 7,354.18 and 1,978.68 is: 2,969.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,900.36 : 7,354.18 = 1,978.68 : x
  2. Step 2: Convert to fraction form
    4,900.36/7,354.18 = 1,978.68/x
  3. Step 3: Cross multiply
    4,900.36x = 7,354.18 × 1,978.68
  4. Step 4: Simplify right side
    4,900.36x = 14,551,568.88
  5. Step 5: Solve for x
    x = 14,551,568.88/4,900.36
  6. Step 6: Final answer
    x = 2,969.49

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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.