Home / 3,815.18-5,264.90-2,136.58

Finding the Fourth Proportional to 3,815.18, 5,264.90 and 2,136.58

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Solution

The fourth proportional to 3,815.18, 5,264.90 and 2,136.58 is: 2,948.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,815.18 : 5,264.90 = 2,136.58 : x
  2. Step 2: Convert to fraction form
    3,815.18/5,264.90 = 2,136.58/x
  3. Step 3: Cross multiply
    3,815.18x = 5,264.90 × 2,136.58
  4. Step 4: Simplify right side
    3,815.18x = 11,248,880.04
  5. Step 5: Solve for x
    x = 11,248,880.04/3,815.18
  6. Step 6: Final answer
    x = 2,948.45

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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.