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Finding the Fourth Proportional to 3,149.58, 4,720.26 and 1,298.58

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Solution

The fourth proportional to 3,149.58, 4,720.26 and 1,298.58 is: 1,946.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,149.58 : 4,720.26 = 1,298.58 : x
  2. Step 2: Convert to fraction form
    3,149.58/4,720.26 = 1,298.58/x
  3. Step 3: Cross multiply
    3,149.58x = 4,720.26 × 1,298.58
  4. Step 4: Simplify right side
    3,149.58x = 6,129,635.23
  5. Step 5: Solve for x
    x = 6,129,635.23/3,149.58
  6. Step 6: Final answer
    x = 1,946.18

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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.