Home / 7,159.12-9,879.66-4,176.76

Finding the Fourth Proportional to 7,159.12, 9,879.66 and 4,176.76

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Solution

The fourth proportional to 7,159.12, 9,879.66 and 4,176.76 is: 5,763.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,159.12 : 9,879.66 = 4,176.76 : x
  2. Step 2: Convert to fraction form
    7,159.12/9,879.66 = 4,176.76/x
  3. Step 3: Cross multiply
    7,159.12x = 9,879.66 × 4,176.76
  4. Step 4: Simplify right side
    7,159.12x = 41,264,968.70
  5. Step 5: Solve for x
    x = 41,264,968.70/7,159.12
  6. Step 6: Final answer
    x = 5,763.97

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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.