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Finding the Fourth Proportional to 1,749, 2,623.68 and 516.72

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Solution

The fourth proportional to 1,749, 2,623.68 and 516.72 is: 775.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,749 : 2,623.68 = 516.72 : x
  2. Step 2: Convert to fraction form
    1,749/2,623.68 = 516.72/x
  3. Step 3: Cross multiply
    1,749x = 2,623.68 × 516.72
  4. Step 4: Simplify right side
    1,749x = 1,355,707.93
  5. Step 5: Solve for x
    x = 1,355,707.93/1,749
  6. Step 6: Final answer
    x = 775.13

Related Problems

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Double scale
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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.