Home / 6,123.90-8,448.50-4,001.28

Finding the Fourth Proportional to 6,123.90, 8,448.50 and 4,001.28

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Solution

The fourth proportional to 6,123.90, 8,448.50 and 4,001.28 is: 5,520.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,123.90 : 8,448.50 = 4,001.28 : x
  2. Step 2: Convert to fraction form
    6,123.90/8,448.50 = 4,001.28/x
  3. Step 3: Cross multiply
    6,123.90x = 8,448.50 × 4,001.28
  4. Step 4: Simplify right side
    6,123.90x = 33,804,814.08
  5. Step 5: Solve for x
    x = 33,804,814.08/6,123.90
  6. Step 6: Final answer
    x = 5,520.14

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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.