Home / 3,420.36-5,130.24-955.14

Finding the Fourth Proportional to 3,420.36, 5,130.24 and 955.14

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Solution

The fourth proportional to 3,420.36, 5,130.24 and 955.14 is: 1,432.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,420.36 : 5,130.24 = 955.14 : x
  2. Step 2: Convert to fraction form
    3,420.36/5,130.24 = 955.14/x
  3. Step 3: Cross multiply
    3,420.36x = 5,130.24 × 955.14
  4. Step 4: Simplify right side
    3,420.36x = 4,900,097.43
  5. Step 5: Solve for x
    x = 4,900,097.43/3,420.36
  6. Step 6: Final answer
    x = 1,432.63

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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.