Home / 7,159.14-9,879.30-4,327.20

Finding the Fourth Proportional to 7,159.14, 9,879.30 and 4,327.20

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Solution

The fourth proportional to 7,159.14, 9,879.30 and 4,327.20 is: 5,971.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,159.14 : 9,879.30 = 4,327.20 : x
  2. Step 2: Convert to fraction form
    7,159.14/9,879.30 = 4,327.20/x
  3. Step 3: Cross multiply
    7,159.14x = 9,879.30 × 4,327.20
  4. Step 4: Simplify right side
    7,159.14x = 42,749,706.96
  5. Step 5: Solve for x
    x = 42,749,706.96/7,159.14
  6. Step 6: Final answer
    x = 5,971.35

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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.