Home / 7,940.87-11,913.27-5,605.45

Finding the Fourth Proportional to 7,940.87, 11,913.27 and 5,605.45

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Solution

The fourth proportional to 7,940.87, 11,913.27 and 5,605.45 is: 8,409.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,940.87 : 11,913.27 = 5,605.45 : x
  2. Step 2: Convert to fraction form
    7,940.87/11,913.27 = 5,605.45/x
  3. Step 3: Cross multiply
    7,940.87x = 11,913.27 × 5,605.45
  4. Step 4: Simplify right side
    7,940.87x = 66,779,239.32
  5. Step 5: Solve for x
    x = 66,779,239.32/7,940.87
  6. Step 6: Final answer
    x = 8,409.56

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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.