Home / 2,621.34-3,618.57-1,865.61

Finding the Fourth Proportional to 2,621.34, 3,618.57 and 1,865.61

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Solution

The fourth proportional to 2,621.34, 3,618.57 and 1,865.61 is: 2,575.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,621.34 : 3,618.57 = 1,865.61 : x
  2. Step 2: Convert to fraction form
    2,621.34/3,618.57 = 1,865.61/x
  3. Step 3: Cross multiply
    2,621.34x = 3,618.57 × 1,865.61
  4. Step 4: Simplify right side
    2,621.34x = 6,750,840.38
  5. Step 5: Solve for x
    x = 6,750,840.38/2,621.34
  6. Step 6: Final answer
    x = 2,575.34

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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.