Home / 7,904.39-11,861.33-3,159.70

Finding the Fourth Proportional to 7,904.39, 11,861.33 and 3,159.70

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Solution

The fourth proportional to 7,904.39, 11,861.33 and 3,159.70 is: 4,741.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,904.39 : 11,861.33 = 3,159.70 : x
  2. Step 2: Convert to fraction form
    7,904.39/11,861.33 = 3,159.70/x
  3. Step 3: Cross multiply
    7,904.39x = 11,861.33 × 3,159.70
  4. Step 4: Simplify right side
    7,904.39x = 37,478,264.16
  5. Step 5: Solve for x
    x = 37,478,264.16/7,904.39
  6. Step 6: Final answer
    x = 4,741.45

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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.