Home / 3,555.58-5,330.13-1,215.15

Finding the Fourth Proportional to 3,555.58, 5,330.13 and 1,215.15

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Solution

The fourth proportional to 3,555.58, 5,330.13 and 1,215.15 is: 1,821.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,555.58 : 5,330.13 = 1,215.15 : x
  2. Step 2: Convert to fraction form
    3,555.58/5,330.13 = 1,215.15/x
  3. Step 3: Cross multiply
    3,555.58x = 5,330.13 × 1,215.15
  4. Step 4: Simplify right side
    3,555.58x = 6,476,916.32
  5. Step 5: Solve for x
    x = 6,476,916.32/3,555.58
  6. Step 6: Final answer
    x = 1,821.62

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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.