Home / 8,485.28-11,685.48-6,123.68

Finding the Fourth Proportional to 8,485.28, 11,685.48 and 6,123.68

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Solution

The fourth proportional to 8,485.28, 11,685.48 and 6,123.68 is: 8,433.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,485.28 : 11,685.48 = 6,123.68 : x
  2. Step 2: Convert to fraction form
    8,485.28/11,685.48 = 6,123.68/x
  3. Step 3: Cross multiply
    8,485.28x = 11,685.48 × 6,123.68
  4. Step 4: Simplify right side
    8,485.28x = 71,558,140.17
  5. Step 5: Solve for x
    x = 71,558,140.17/8,485.28
  6. Step 6: Final answer
    x = 8,433.21

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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.