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Finding the Fourth Proportional to 2,260.91, 3,389.65 and 874.06

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Solution

The fourth proportional to 2,260.91, 3,389.65 and 874.06 is: 1,310.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,260.91 : 3,389.65 = 874.06 : x
  2. Step 2: Convert to fraction form
    2,260.91/3,389.65 = 874.06/x
  3. Step 3: Cross multiply
    2,260.91x = 3,389.65 × 874.06
  4. Step 4: Simplify right side
    2,260.91x = 2,962,746.82
  5. Step 5: Solve for x
    x = 2,962,746.82/2,260.91
  6. Step 6: Final answer
    x = 1,310.42

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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.