Home / 7,816.72-10,790.58-4,987.90

Finding the Fourth Proportional to 7,816.72, 10,790.58 and 4,987.90

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Solution

The fourth proportional to 7,816.72, 10,790.58 and 4,987.90 is: 6,885.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,816.72 : 10,790.58 = 4,987.90 : x
  2. Step 2: Convert to fraction form
    7,816.72/10,790.58 = 4,987.90/x
  3. Step 3: Cross multiply
    7,816.72x = 10,790.58 × 4,987.90
  4. Step 4: Simplify right side
    7,816.72x = 53,822,333.98
  5. Step 5: Solve for x
    x = 53,822,333.98/7,816.72
  6. Step 6: Final answer
    x = 6,885.54

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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.