Home / 7,139.20-10,714.95-4,949.46

Finding the Fourth Proportional to 7,139.20, 10,714.95 and 4,949.46

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Solution

The fourth proportional to 7,139.20, 10,714.95 and 4,949.46 is: 7,428.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,139.20 : 10,714.95 = 4,949.46 : x
  2. Step 2: Convert to fraction form
    7,139.20/10,714.95 = 4,949.46/x
  3. Step 3: Cross multiply
    7,139.20x = 10,714.95 × 4,949.46
  4. Step 4: Simplify right side
    7,139.20x = 53,033,238.05
  5. Step 5: Solve for x
    x = 53,033,238.05/7,139.20
  6. Step 6: Final answer
    x = 7,428.46

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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.