Home / 8,143.42-11,237.40-4,557.78

Finding the Fourth Proportional to 8,143.42, 11,237.40 and 4,557.78

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Solution

The fourth proportional to 8,143.42, 11,237.40 and 4,557.78 is: 6,289.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,143.42 : 11,237.40 = 4,557.78 : x
  2. Step 2: Convert to fraction form
    8,143.42/11,237.40 = 4,557.78/x
  3. Step 3: Cross multiply
    8,143.42x = 11,237.40 × 4,557.78
  4. Step 4: Simplify right side
    8,143.42x = 51,217,596.97
  5. Step 5: Solve for x
    x = 51,217,596.97/8,143.42
  6. Step 6: Final answer
    x = 6,289.45

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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.