Home / 7,145.40-10,722.80-2,762.92

Finding the Fourth Proportional to 7,145.40, 10,722.80 and 2,762.92

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Solution

The fourth proportional to 7,145.40, 10,722.80 and 2,762.92 is: 4,146.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,145.40 : 10,722.80 = 2,762.92 : x
  2. Step 2: Convert to fraction form
    7,145.40/10,722.80 = 2,762.92/x
  3. Step 3: Cross multiply
    7,145.40x = 10,722.80 × 2,762.92
  4. Step 4: Simplify right side
    7,145.40x = 29,626,238.58
  5. Step 5: Solve for x
    x = 29,626,238.58/7,145.40
  6. Step 6: Final answer
    x = 4,146.20

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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.