Home / 1,623.62-2,240.58-915.38

Finding the Fourth Proportional to 1,623.62, 2,240.58 and 915.38

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Solution

The fourth proportional to 1,623.62, 2,240.58 and 915.38 is: 1,263.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,623.62 : 2,240.58 = 915.38 : x
  2. Step 2: Convert to fraction form
    1,623.62/2,240.58 = 915.38/x
  3. Step 3: Cross multiply
    1,623.62x = 2,240.58 × 915.38
  4. Step 4: Simplify right side
    1,623.62x = 2,050,982.12
  5. Step 5: Solve for x
    x = 2,050,982.12/1,623.62
  6. Step 6: Final answer
    x = 1,263.22

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Half scale
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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.