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Finding the Fourth Proportional to 3,160.13, 4,740.19 and 851.63

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Solution

The fourth proportional to 3,160.13, 4,740.19 and 851.63 is: 1,277.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,160.13 : 4,740.19 = 851.63 : x
  2. Step 2: Convert to fraction form
    3,160.13/4,740.19 = 851.63/x
  3. Step 3: Cross multiply
    3,160.13x = 4,740.19 × 851.63
  4. Step 4: Simplify right side
    3,160.13x = 4,036,862.18
  5. Step 5: Solve for x
    x = 4,036,862.18/3,160.13
  6. Step 6: Final answer
    x = 1,277.44

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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.