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Finding the Fourth Proportional to 1,730.10, 2,591 and 948.94

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Solution

The fourth proportional to 1,730.10, 2,591 and 948.94 is: 1,421.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,730.10 : 2,591 = 948.94 : x
  2. Step 2: Convert to fraction form
    1,730.10/2,591 = 948.94/x
  3. Step 3: Cross multiply
    1,730.10x = 2,591 × 948.94
  4. Step 4: Simplify right side
    1,730.10x = 2,458,703.54
  5. Step 5: Solve for x
    x = 2,458,703.54/1,730.10
  6. Step 6: Final answer
    x = 1,421.13

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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.