Home / 3,916.40-5,404.58-2,148.03

Finding the Fourth Proportional to 3,916.40, 5,404.58 and 2,148.03

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Solution

The fourth proportional to 3,916.40, 5,404.58 and 2,148.03 is: 2,964.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,916.40 : 5,404.58 = 2,148.03 : x
  2. Step 2: Convert to fraction form
    3,916.40/5,404.58 = 2,148.03/x
  3. Step 3: Cross multiply
    3,916.40x = 5,404.58 × 2,148.03
  4. Step 4: Simplify right side
    3,916.40x = 11,609,199.98
  5. Step 5: Solve for x
    x = 11,609,199.98/3,916.40
  6. Step 6: Final answer
    x = 2,964.26

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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.