Home / 7,518.71-11,278.82-2,587.70

Finding the Fourth Proportional to 7,518.71, 11,278.82 and 2,587.70

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Solution

The fourth proportional to 7,518.71, 11,278.82 and 2,587.70 is: 3,881.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,518.71 : 11,278.82 = 2,587.70 : x
  2. Step 2: Convert to fraction form
    7,518.71/11,278.82 = 2,587.70/x
  3. Step 3: Cross multiply
    7,518.71x = 11,278.82 × 2,587.70
  4. Step 4: Simplify right side
    7,518.71x = 29,186,208.98
  5. Step 5: Solve for x
    x = 29,186,208.98/7,518.71
  6. Step 6: Final answer
    x = 3,881.81

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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.