Home / 7,781.32-11,671.98-2,587.19

Finding the Fourth Proportional to 7,781.32, 11,671.98 and 2,587.19

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Solution

The fourth proportional to 7,781.32, 11,671.98 and 2,587.19 is: 3,880.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,781.32 : 11,671.98 = 2,587.19 : x
  2. Step 2: Convert to fraction form
    7,781.32/11,671.98 = 2,587.19/x
  3. Step 3: Cross multiply
    7,781.32x = 11,671.98 × 2,587.19
  4. Step 4: Simplify right side
    7,781.32x = 30,197,617.00
  5. Step 5: Solve for x
    x = 30,197,617.00/7,781.32
  6. Step 6: Final answer
    x = 3,880.79

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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.