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Finding the Fourth Proportional to 1,658.34, 2,487.51 and 684.18

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Solution

The fourth proportional to 1,658.34, 2,487.51 and 684.18 is: 1,026.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,658.34 : 2,487.51 = 684.18 : x
  2. Step 2: Convert to fraction form
    1,658.34/2,487.51 = 684.18/x
  3. Step 3: Cross multiply
    1,658.34x = 2,487.51 × 684.18
  4. Step 4: Simplify right side
    1,658.34x = 1,701,904.59
  5. Step 5: Solve for x
    x = 1,701,904.59/1,658.34
  6. Step 6: Final answer
    x = 1,026.27

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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.