Home / 7,037.76-10,555.20-3,139.68

Finding the Fourth Proportional to 7,037.76, 10,555.20 and 3,139.68

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Solution

The fourth proportional to 7,037.76, 10,555.20 and 3,139.68 is: 4,708.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,037.76 : 10,555.20 = 3,139.68 : x
  2. Step 2: Convert to fraction form
    7,037.76/10,555.20 = 3,139.68/x
  3. Step 3: Cross multiply
    7,037.76x = 10,555.20 × 3,139.68
  4. Step 4: Simplify right side
    7,037.76x = 33,139,950.34
  5. Step 5: Solve for x
    x = 33,139,950.34/7,037.76
  6. Step 6: Final answer
    x = 4,708.88

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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.