Home / 5,145.27-7,100.40-2,907.09

Finding the Fourth Proportional to 5,145.27, 7,100.40 and 2,907.09

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Solution

The fourth proportional to 5,145.27, 7,100.40 and 2,907.09 is: 4,011.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.27 : 7,100.40 = 2,907.09 : x
  2. Step 2: Convert to fraction form
    5,145.27/7,100.40 = 2,907.09/x
  3. Step 3: Cross multiply
    5,145.27x = 7,100.40 × 2,907.09
  4. Step 4: Simplify right side
    5,145.27x = 20,641,501.84
  5. Step 5: Solve for x
    x = 20,641,501.84/5,145.27
  6. Step 6: Final answer
    x = 4,011.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.