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Finding the Fourth Proportional to 5,258.86, 7,888.20 and 2,486.86

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Solution

The fourth proportional to 5,258.86, 7,888.20 and 2,486.86 is: 3,730.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,258.86 : 7,888.20 = 2,486.86 : x
  2. Step 2: Convert to fraction form
    5,258.86/7,888.20 = 2,486.86/x
  3. Step 3: Cross multiply
    5,258.86x = 7,888.20 × 2,486.86
  4. Step 4: Simplify right side
    5,258.86x = 19,616,849.05
  5. Step 5: Solve for x
    x = 19,616,849.05/5,258.86
  6. Step 6: Final answer
    x = 3,730.25

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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.