Home / 5,621.03-8,429.40-1,872.14

Finding the Fourth Proportional to 5,621.03, 8,429.40 and 1,872.14

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Solution

The fourth proportional to 5,621.03, 8,429.40 and 1,872.14 is: 2,807.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,621.03 : 8,429.40 = 1,872.14 : x
  2. Step 2: Convert to fraction form
    5,621.03/8,429.40 = 1,872.14/x
  3. Step 3: Cross multiply
    5,621.03x = 8,429.40 × 1,872.14
  4. Step 4: Simplify right side
    5,621.03x = 15,780,974.77
  5. Step 5: Solve for x
    x = 15,780,974.77/5,621.03
  6. Step 6: Final answer
    x = 2,807.49

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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.