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Finding the Fourth Proportional to 1,748.72, 2,623.09 and 653.07

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Solution

The fourth proportional to 1,748.72, 2,623.09 and 653.07 is: 979.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,748.72 : 2,623.09 = 653.07 : x
  2. Step 2: Convert to fraction form
    1,748.72/2,623.09 = 653.07/x
  3. Step 3: Cross multiply
    1,748.72x = 2,623.09 × 653.07
  4. Step 4: Simplify right side
    1,748.72x = 1,713,058.12
  5. Step 5: Solve for x
    x = 1,713,058.12/1,748.72
  6. Step 6: Final answer
    x = 979.61

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Double scale
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Similar ratio
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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.