Home / 8,538.21-12,808.52-2,990.29

Finding the Fourth Proportional to 8,538.21, 12,808.52 and 2,990.29

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Solution

The fourth proportional to 8,538.21, 12,808.52 and 2,990.29 is: 4,485.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,538.21 : 12,808.52 = 2,990.29 : x
  2. Step 2: Convert to fraction form
    8,538.21/12,808.52 = 2,990.29/x
  3. Step 3: Cross multiply
    8,538.21x = 12,808.52 × 2,990.29
  4. Step 4: Simplify right side
    8,538.21x = 38,301,153.51
  5. Step 5: Solve for x
    x = 38,301,153.51/8,538.21
  6. Step 6: Final answer
    x = 4,485.85

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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.