Home / 6,845.48-9,438.21-5,712.79

Finding the Fourth Proportional to 6,845.48, 9,438.21 and 5,712.79

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Solution

The fourth proportional to 6,845.48, 9,438.21 and 5,712.79 is: 7,876.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,845.48 : 9,438.21 = 5,712.79 : x
  2. Step 2: Convert to fraction form
    6,845.48/9,438.21 = 5,712.79/x
  3. Step 3: Cross multiply
    6,845.48x = 9,438.21 × 5,712.79
  4. Step 4: Simplify right side
    6,845.48x = 53,918,488.11
  5. Step 5: Solve for x
    x = 53,918,488.11/6,845.48
  6. Step 6: Final answer
    x = 7,876.51

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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.