Home / 7,139.46-10,709.91-2,458.85

Finding the Fourth Proportional to 7,139.46, 10,709.91 and 2,458.85

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Solution

The fourth proportional to 7,139.46, 10,709.91 and 2,458.85 is: 3,688.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,139.46 : 10,709.91 = 2,458.85 : x
  2. Step 2: Convert to fraction form
    7,139.46/10,709.91 = 2,458.85/x
  3. Step 3: Cross multiply
    7,139.46x = 10,709.91 × 2,458.85
  4. Step 4: Simplify right side
    7,139.46x = 26,334,062.20
  5. Step 5: Solve for x
    x = 26,334,062.20/7,139.46
  6. Step 6: Final answer
    x = 3,688.52

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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.