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Finding the Fourth Proportional to 2,111.08, 3,166.60 and 572.08

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Solution

The fourth proportional to 2,111.08, 3,166.60 and 572.08 is: 858.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,111.08 : 3,166.60 = 572.08 : x
  2. Step 2: Convert to fraction form
    2,111.08/3,166.60 = 572.08/x
  3. Step 3: Cross multiply
    2,111.08x = 3,166.60 × 572.08
  4. Step 4: Simplify right side
    2,111.08x = 1,811,548.53
  5. Step 5: Solve for x
    x = 1,811,548.53/2,111.08
  6. Step 6: Final answer
    x = 858.11

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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.