Home / 7,145.28-10,721.52-4,028.76

Finding the Fourth Proportional to 7,145.28, 10,721.52 and 4,028.76

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Solution

The fourth proportional to 7,145.28, 10,721.52 and 4,028.76 is: 6,045.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,145.28 : 10,721.52 = 4,028.76 : x
  2. Step 2: Convert to fraction form
    7,145.28/10,721.52 = 4,028.76/x
  3. Step 3: Cross multiply
    7,145.28x = 10,721.52 × 4,028.76
  4. Step 4: Simplify right side
    7,145.28x = 43,194,430.92
  5. Step 5: Solve for x
    x = 43,194,430.92/7,145.28
  6. Step 6: Final answer
    x = 6,045.17

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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.