Home / 3,916.53-5,404.84-2,124.05

Finding the Fourth Proportional to 3,916.53, 5,404.84 and 2,124.05

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Solution

The fourth proportional to 3,916.53, 5,404.84 and 2,124.05 is: 2,931.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,916.53 : 5,404.84 = 2,124.05 : x
  2. Step 2: Convert to fraction form
    3,916.53/5,404.84 = 2,124.05/x
  3. Step 3: Cross multiply
    3,916.53x = 5,404.84 × 2,124.05
  4. Step 4: Simplify right side
    3,916.53x = 11,480,118.07
  5. Step 5: Solve for x
    x = 11,480,118.07/3,916.53
  6. Step 6: Final answer
    x = 2,931.20

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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.