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Finding the Fourth Proportional to 7,811.04, 10,781.04 and 4,787.07

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Solution

The fourth proportional to 7,811.04, 10,781.04 and 4,787.07 is: 6,607.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,811.04 : 10,781.04 = 4,787.07 : x
  2. Step 2: Convert to fraction form
    7,811.04/10,781.04 = 4,787.07/x
  3. Step 3: Cross multiply
    7,811.04x = 10,781.04 × 4,787.07
  4. Step 4: Simplify right side
    7,811.04x = 51,609,593.15
  5. Step 5: Solve for x
    x = 51,609,593.15/7,811.04
  6. Step 6: Final answer
    x = 6,607.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.