Home / 5,417.58-8,123.30-2,128.88

Finding the Fourth Proportional to 5,417.58, 8,123.30 and 2,128.88

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Solution

The fourth proportional to 5,417.58, 8,123.30 and 2,128.88 is: 3,192.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,417.58 : 8,123.30 = 2,128.88 : x
  2. Step 2: Convert to fraction form
    5,417.58/8,123.30 = 2,128.88/x
  3. Step 3: Cross multiply
    5,417.58x = 8,123.30 × 2,128.88
  4. Step 4: Simplify right side
    5,417.58x = 17,293,530.90
  5. Step 5: Solve for x
    x = 17,293,530.90/5,417.58
  6. Step 6: Final answer
    x = 3,192.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.