Home / 7,778.79-10,734.66-4,242.02

Finding the Fourth Proportional to 7,778.79, 10,734.66 and 4,242.02

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Solution

The fourth proportional to 7,778.79, 10,734.66 and 4,242.02 is: 5,853.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,778.79 : 10,734.66 = 4,242.02 : x
  2. Step 2: Convert to fraction form
    7,778.79/10,734.66 = 4,242.02/x
  3. Step 3: Cross multiply
    7,778.79x = 10,734.66 × 4,242.02
  4. Step 4: Simplify right side
    7,778.79x = 45,536,588.74
  5. Step 5: Solve for x
    x = 45,536,588.74/7,778.79
  6. Step 6: Final answer
    x = 5,853.94

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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.