Home / 3,507.09-5,263.70-1,428.23

Finding the Fourth Proportional to 3,507.09, 5,263.70 and 1,428.23

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Solution

The fourth proportional to 3,507.09, 5,263.70 and 1,428.23 is: 2,143.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,507.09 : 5,263.70 = 1,428.23 : x
  2. Step 2: Convert to fraction form
    3,507.09/5,263.70 = 1,428.23/x
  3. Step 3: Cross multiply
    3,507.09x = 5,263.70 × 1,428.23
  4. Step 4: Simplify right side
    3,507.09x = 7,517,740.79
  5. Step 5: Solve for x
    x = 7,517,740.79/3,507.09
  6. Step 6: Final answer
    x = 2,143.58

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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.