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Finding the Fourth Proportional to 2,590.88, 3,886.38 and 2,390.30

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Solution

The fourth proportional to 2,590.88, 3,886.38 and 2,390.30 is: 3,585.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,590.88 : 3,886.38 = 2,390.30 : x
  2. Step 2: Convert to fraction form
    2,590.88/3,886.38 = 2,390.30/x
  3. Step 3: Cross multiply
    2,590.88x = 3,886.38 × 2,390.30
  4. Step 4: Simplify right side
    2,590.88x = 9,289,614.11
  5. Step 5: Solve for x
    x = 9,289,614.11/2,590.88
  6. Step 6: Final answer
    x = 3,585.51

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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.