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Finding the Fourth Proportional to 2,346.12, 3,520.13 and 885.69

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Solution

The fourth proportional to 2,346.12, 3,520.13 and 885.69 is: 1,328.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,346.12 : 3,520.13 = 885.69 : x
  2. Step 2: Convert to fraction form
    2,346.12/3,520.13 = 885.69/x
  3. Step 3: Cross multiply
    2,346.12x = 3,520.13 × 885.69
  4. Step 4: Simplify right side
    2,346.12x = 3,117,739.51
  5. Step 5: Solve for x
    x = 3,117,739.51/2,346.12
  6. Step 6: Final answer
    x = 1,328.89

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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.