Home / 5,918.24-8,164.40-3,929.76

Finding the Fourth Proportional to 5,918.24, 8,164.40 and 3,929.76

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Solution

The fourth proportional to 5,918.24, 8,164.40 and 3,929.76 is: 5,421.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,918.24 : 8,164.40 = 3,929.76 : x
  2. Step 2: Convert to fraction form
    5,918.24/8,164.40 = 3,929.76/x
  3. Step 3: Cross multiply
    5,918.24x = 8,164.40 × 3,929.76
  4. Step 4: Simplify right side
    5,918.24x = 32,084,132.54
  5. Step 5: Solve for x
    x = 32,084,132.54/5,918.24
  6. Step 6: Final answer
    x = 5,421.23

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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.