Home / 5,388.81-7,435.10-3,151.23

Finding the Fourth Proportional to 5,388.81, 7,435.10 and 3,151.23

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Solution

The fourth proportional to 5,388.81, 7,435.10 and 3,151.23 is: 4,347.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,388.81 : 7,435.10 = 3,151.23 : x
  2. Step 2: Convert to fraction form
    5,388.81/7,435.10 = 3,151.23/x
  3. Step 3: Cross multiply
    5,388.81x = 7,435.10 × 3,151.23
  4. Step 4: Simplify right side
    5,388.81x = 23,429,714.27
  5. Step 5: Solve for x
    x = 23,429,714.27/5,388.81
  6. Step 6: Final answer
    x = 4,347.85

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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.