Home / 3,328.80-5,012.88-3,134.40

Finding the Fourth Proportional to 3,328.80, 5,012.88 and 3,134.40

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Solution

The fourth proportional to 3,328.80, 5,012.88 and 3,134.40 is: 4,720.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,328.80 : 5,012.88 = 3,134.40 : x
  2. Step 2: Convert to fraction form
    3,328.80/5,012.88 = 3,134.40/x
  3. Step 3: Cross multiply
    3,328.80x = 5,012.88 × 3,134.40
  4. Step 4: Simplify right side
    3,328.80x = 15,712,371.07
  5. Step 5: Solve for x
    x = 15,712,371.07/3,328.80
  6. Step 6: Final answer
    x = 4,720.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.