Home / 7,815.89-10,787.18-4,459.80

Finding the Fourth Proportional to 7,815.89, 10,787.18 and 4,459.80

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Solution

The fourth proportional to 7,815.89, 10,787.18 and 4,459.80 is: 6,155.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,815.89 : 10,787.18 = 4,459.80 : x
  2. Step 2: Convert to fraction form
    7,815.89/10,787.18 = 4,459.80/x
  3. Step 3: Cross multiply
    7,815.89x = 10,787.18 × 4,459.80
  4. Step 4: Simplify right side
    7,815.89x = 48,108,611.43
  5. Step 5: Solve for x
    x = 48,108,611.43/7,815.89
  6. Step 6: Final answer
    x = 6,155.23

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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.