Home / 7,011.28-10,515.30-2,079.76

Finding the Fourth Proportional to 7,011.28, 10,515.30 and 2,079.76

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Solution

The fourth proportional to 7,011.28, 10,515.30 and 2,079.76 is: 3,119.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,011.28 : 10,515.30 = 2,079.76 : x
  2. Step 2: Convert to fraction form
    7,011.28/10,515.30 = 2,079.76/x
  3. Step 3: Cross multiply
    7,011.28x = 10,515.30 × 2,079.76
  4. Step 4: Simplify right side
    7,011.28x = 21,869,300.33
  5. Step 5: Solve for x
    x = 21,869,300.33/7,011.28
  6. Step 6: Final answer
    x = 3,119.16

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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.