Home / 9,145.96-12,621.40-4,954.20

Finding the Fourth Proportional to 9,145.96, 12,621.40 and 4,954.20

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Solution

The fourth proportional to 9,145.96, 12,621.40 and 4,954.20 is: 6,836.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,145.96 : 12,621.40 = 4,954.20 : x
  2. Step 2: Convert to fraction form
    9,145.96/12,621.40 = 4,954.20/x
  3. Step 3: Cross multiply
    9,145.96x = 12,621.40 × 4,954.20
  4. Step 4: Simplify right side
    9,145.96x = 62,528,939.88
  5. Step 5: Solve for x
    x = 62,528,939.88/9,145.96
  6. Step 6: Final answer
    x = 6,836.78

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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.