Home / 7,780.25-11,671.59-2,587.34

Finding the Fourth Proportional to 7,780.25, 11,671.59 and 2,587.34

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Solution

The fourth proportional to 7,780.25, 11,671.59 and 2,587.34 is: 3,881.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,780.25 : 11,671.59 = 2,587.34 : x
  2. Step 2: Convert to fraction form
    7,780.25/11,671.59 = 2,587.34/x
  3. Step 3: Cross multiply
    7,780.25x = 11,671.59 × 2,587.34
  4. Step 4: Simplify right side
    7,780.25x = 30,198,371.67
  5. Step 5: Solve for x
    x = 30,198,371.67/7,780.25
  6. Step 6: Final answer
    x = 3,881.41

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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.