Home / 7,166.08-9,888.32-4,021.60

Finding the Fourth Proportional to 7,166.08, 9,888.32 and 4,021.60

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Solution

The fourth proportional to 7,166.08, 9,888.32 and 4,021.60 is: 5,549.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,166.08 : 9,888.32 = 4,021.60 : x
  2. Step 2: Convert to fraction form
    7,166.08/9,888.32 = 4,021.60/x
  3. Step 3: Cross multiply
    7,166.08x = 9,888.32 × 4,021.60
  4. Step 4: Simplify right side
    7,166.08x = 39,766,867.71
  5. Step 5: Solve for x
    x = 39,766,867.71/7,166.08
  6. Step 6: Final answer
    x = 5,549.32

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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.