Home / 7,031.07-10,546.70-2,100.78

Finding the Fourth Proportional to 7,031.07, 10,546.70 and 2,100.78

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Solution

The fourth proportional to 7,031.07, 10,546.70 and 2,100.78 is: 3,151.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,031.07 : 10,546.70 = 2,100.78 : x
  2. Step 2: Convert to fraction form
    7,031.07/10,546.70 = 2,100.78/x
  3. Step 3: Cross multiply
    7,031.07x = 10,546.70 × 2,100.78
  4. Step 4: Simplify right side
    7,031.07x = 22,156,285.92
  5. Step 5: Solve for x
    x = 22,156,285.92/7,031.07
  6. Step 6: Final answer
    x = 3,151.20

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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.