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Finding the Fourth Proportional to 7,816.88, 10,787.87 and 4,459.77

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Solution

The fourth proportional to 7,816.88, 10,787.87 and 4,459.77 is: 6,154.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,816.88 : 10,787.87 = 4,459.77 : x
  2. Step 2: Convert to fraction form
    7,816.88/10,787.87 = 4,459.77/x
  3. Step 3: Cross multiply
    7,816.88x = 10,787.87 × 4,459.77
  4. Step 4: Simplify right side
    7,816.88x = 48,111,430.14
  5. Step 5: Solve for x
    x = 48,111,430.14/7,816.88
  6. Step 6: Final answer
    x = 6,154.81

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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.