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Finding the Fourth Proportional to 5,671.71, 7,826.79 and 3,153.69

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Solution

The fourth proportional to 5,671.71, 7,826.79 and 3,153.69 is: 4,352.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,671.71 : 7,826.79 = 3,153.69 : x
  2. Step 2: Convert to fraction form
    5,671.71/7,826.79 = 3,153.69/x
  3. Step 3: Cross multiply
    5,671.71x = 7,826.79 × 3,153.69
  4. Step 4: Simplify right side
    5,671.71x = 24,683,269.36
  5. Step 5: Solve for x
    x = 24,683,269.36/5,671.71
  6. Step 6: Final answer
    x = 4,352.00

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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.