Home / 9,145.21-12,620.28-5,558.98

Finding the Fourth Proportional to 9,145.21, 12,620.28 and 5,558.98

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Solution

The fourth proportional to 9,145.21, 12,620.28 and 5,558.98 is: 7,671.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,145.21 : 12,620.28 = 5,558.98 : x
  2. Step 2: Convert to fraction form
    9,145.21/12,620.28 = 5,558.98/x
  3. Step 3: Cross multiply
    9,145.21x = 12,620.28 × 5,558.98
  4. Step 4: Simplify right side
    9,145.21x = 70,155,884.11
  5. Step 5: Solve for x
    x = 70,155,884.11/9,145.21
  6. Step 6: Final answer
    x = 7,671.33

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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.