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Finding the Fourth Proportional to 8,037.78, 12,040.20 and 4,740.90

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Solution

The fourth proportional to 8,037.78, 12,040.20 and 4,740.90 is: 7,101.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,037.78 : 12,040.20 = 4,740.90 : x
  2. Step 2: Convert to fraction form
    8,037.78/12,040.20 = 4,740.90/x
  3. Step 3: Cross multiply
    8,037.78x = 12,040.20 × 4,740.90
  4. Step 4: Simplify right side
    8,037.78x = 57,081,384.18
  5. Step 5: Solve for x
    x = 57,081,384.18/8,037.78
  6. Step 6: Final answer
    x = 7,101.64

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1.5x scale

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.