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Finding the Fourth Proportional to 11,305.79, 16,957.05 and 2,985.06

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Solution

The fourth proportional to 11,305.79, 16,957.05 and 2,985.06 is: 4,477.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,305.79 : 16,957.05 = 2,985.06 : x
  2. Step 2: Convert to fraction form
    11,305.79/16,957.05 = 2,985.06/x
  3. Step 3: Cross multiply
    11,305.79x = 16,957.05 × 2,985.06
  4. Step 4: Simplify right side
    11,305.79x = 50,617,811.67
  5. Step 5: Solve for x
    x = 50,617,811.67/11,305.79
  6. Step 6: Final answer
    x = 4,477.16

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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.