Home / 8,142.89-11,237.40-4,557.74

Finding the Fourth Proportional to 8,142.89, 11,237.40 and 4,557.74

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Solution

The fourth proportional to 8,142.89, 11,237.40 and 4,557.74 is: 6,289.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,142.89 : 11,237.40 = 4,557.74 : x
  2. Step 2: Convert to fraction form
    8,142.89/11,237.40 = 4,557.74/x
  3. Step 3: Cross multiply
    8,142.89x = 11,237.40 × 4,557.74
  4. Step 4: Simplify right side
    8,142.89x = 51,217,091.29
  5. Step 5: Solve for x
    x = 51,217,091.29/8,142.89
  6. Step 6: Final answer
    x = 6,289.80

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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.