Home / 4,938.36-7,399.12-4,315.20

Finding the Fourth Proportional to 4,938.36, 7,399.12 and 4,315.20

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Solution

The fourth proportional to 4,938.36, 7,399.12 and 4,315.20 is: 6,465.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,938.36 : 7,399.12 = 4,315.20 : x
  2. Step 2: Convert to fraction form
    4,938.36/7,399.12 = 4,315.20/x
  3. Step 3: Cross multiply
    4,938.36x = 7,399.12 × 4,315.20
  4. Step 4: Simplify right side
    4,938.36x = 31,928,682.62
  5. Step 5: Solve for x
    x = 31,928,682.62/4,938.36
  6. Step 6: Final answer
    x = 6,465.44

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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.