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Finding the Fourth Proportional to 4,047.76, 5,583.90 and 2,790.10

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Solution

The fourth proportional to 4,047.76, 5,583.90 and 2,790.10 is: 3,848.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,047.76 : 5,583.90 = 2,790.10 : x
  2. Step 2: Convert to fraction form
    4,047.76/5,583.90 = 2,790.10/x
  3. Step 3: Cross multiply
    4,047.76x = 5,583.90 × 2,790.10
  4. Step 4: Simplify right side
    4,047.76x = 15,579,639.39
  5. Step 5: Solve for x
    x = 15,579,639.39/4,047.76
  6. Step 6: Final answer
    x = 3,848.95

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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.