Home / 4,725.29-7,087.80-1,438.40

Finding the Fourth Proportional to 4,725.29, 7,087.80 and 1,438.40

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Solution

The fourth proportional to 4,725.29, 7,087.80 and 1,438.40 is: 2,157.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,725.29 : 7,087.80 = 1,438.40 : x
  2. Step 2: Convert to fraction form
    4,725.29/7,087.80 = 1,438.40/x
  3. Step 3: Cross multiply
    4,725.29x = 7,087.80 × 1,438.40
  4. Step 4: Simplify right side
    4,725.29x = 10,195,091.52
  5. Step 5: Solve for x
    x = 10,195,091.52/4,725.29
  6. Step 6: Final answer
    x = 2,157.56

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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.