Home / 5,558.36-7,672.84-4,139.55

Finding the Fourth Proportional to 5,558.36, 7,672.84 and 4,139.55

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Solution

The fourth proportional to 5,558.36, 7,672.84 and 4,139.55 is: 5,714.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,558.36 : 7,672.84 = 4,139.55 : x
  2. Step 2: Convert to fraction form
    5,558.36/7,672.84 = 4,139.55/x
  3. Step 3: Cross multiply
    5,558.36x = 7,672.84 × 4,139.55
  4. Step 4: Simplify right side
    5,558.36x = 31,762,094.47
  5. Step 5: Solve for x
    x = 31,762,094.47/5,558.36
  6. Step 6: Final answer
    x = 5,714.30

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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.