Home / 8,123.04-11,199.60-6,629.40

Finding the Fourth Proportional to 8,123.04, 11,199.60 and 6,629.40

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Solution

The fourth proportional to 8,123.04, 11,199.60 and 6,629.40 is: 9,140.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,123.04 : 11,199.60 = 6,629.40 : x
  2. Step 2: Convert to fraction form
    8,123.04/11,199.60 = 6,629.40/x
  3. Step 3: Cross multiply
    8,123.04x = 11,199.60 × 6,629.40
  4. Step 4: Simplify right side
    8,123.04x = 74,246,628.24
  5. Step 5: Solve for x
    x = 74,246,628.24/8,123.04
  6. Step 6: Final answer
    x = 9,140.25

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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.