Home / 8,424.56-12,638.40-2,877.60

Finding the Fourth Proportional to 8,424.56, 12,638.40 and 2,877.60

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Solution

The fourth proportional to 8,424.56, 12,638.40 and 2,877.60 is: 4,316.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,424.56 : 12,638.40 = 2,877.60 : x
  2. Step 2: Convert to fraction form
    8,424.56/12,638.40 = 2,877.60/x
  3. Step 3: Cross multiply
    8,424.56x = 12,638.40 × 2,877.60
  4. Step 4: Simplify right side
    8,424.56x = 36,368,259.84
  5. Step 5: Solve for x
    x = 36,368,259.84/8,424.56
  6. Step 6: Final answer
    x = 4,316.93

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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.