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Finding the Fourth Proportional to 1,885.74, 2,829.07 and 653.14

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Solution

The fourth proportional to 1,885.74, 2,829.07 and 653.14 is: 979.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,885.74 : 2,829.07 = 653.14 : x
  2. Step 2: Convert to fraction form
    1,885.74/2,829.07 = 653.14/x
  3. Step 3: Cross multiply
    1,885.74x = 2,829.07 × 653.14
  4. Step 4: Simplify right side
    1,885.74x = 1,847,778.78
  5. Step 5: Solve for x
    x = 1,847,778.78/1,885.74
  6. Step 6: Final answer
    x = 979.87

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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.