Home / 7,084.08-9,776-3,940.26

Finding the Fourth Proportional to 7,084.08, 9,776 and 3,940.26

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Solution

The fourth proportional to 7,084.08, 9,776 and 3,940.26 is: 5,437.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,084.08 : 9,776 = 3,940.26 : x
  2. Step 2: Convert to fraction form
    7,084.08/9,776 = 3,940.26/x
  3. Step 3: Cross multiply
    7,084.08x = 9,776 × 3,940.26
  4. Step 4: Simplify right side
    7,084.08x = 38,519,981.76
  5. Step 5: Solve for x
    x = 38,519,981.76/7,084.08
  6. Step 6: Final answer
    x = 5,437.54

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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.