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Finding the Fourth Proportional to 1,616.05, 2,421.30 and 886.15

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Solution

The fourth proportional to 1,616.05, 2,421.30 and 886.15 is: 1,327.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,616.05 : 2,421.30 = 886.15 : x
  2. Step 2: Convert to fraction form
    1,616.05/2,421.30 = 886.15/x
  3. Step 3: Cross multiply
    1,616.05x = 2,421.30 × 886.15
  4. Step 4: Simplify right side
    1,616.05x = 2,145,635.00
  5. Step 5: Solve for x
    x = 2,145,635.00/1,616.05
  6. Step 6: Final answer
    x = 1,327.70

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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.