Home / 3,617.80-5,424.27-1,425.40

Finding the Fourth Proportional to 3,617.80, 5,424.27 and 1,425.40

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Solution

The fourth proportional to 3,617.80, 5,424.27 and 1,425.40 is: 2,137.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,617.80 : 5,424.27 = 1,425.40 : x
  2. Step 2: Convert to fraction form
    3,617.80/5,424.27 = 1,425.40/x
  3. Step 3: Cross multiply
    3,617.80x = 5,424.27 × 1,425.40
  4. Step 4: Simplify right side
    3,617.80x = 7,731,754.46
  5. Step 5: Solve for x
    x = 7,731,754.46/3,617.80
  6. Step 6: Final answer
    x = 2,137.14

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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.