Home / 7,347.02-10,138.83-3,989.77

Finding the Fourth Proportional to 7,347.02, 10,138.83 and 3,989.77

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Solution

The fourth proportional to 7,347.02, 10,138.83 and 3,989.77 is: 5,505.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,347.02 : 10,138.83 = 3,989.77 : x
  2. Step 2: Convert to fraction form
    7,347.02/10,138.83 = 3,989.77/x
  3. Step 3: Cross multiply
    7,347.02x = 10,138.83 × 3,989.77
  4. Step 4: Simplify right side
    7,347.02x = 40,451,599.77
  5. Step 5: Solve for x
    x = 40,451,599.77/7,347.02
  6. Step 6: Final answer
    x = 5,505.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.