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Finding the Fourth Proportional to 3,671.54, 5,510.95 and 2,858.70

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Solution

The fourth proportional to 3,671.54, 5,510.95 and 2,858.70 is: 4,290.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,671.54 : 5,510.95 = 2,858.70 : x
  2. Step 2: Convert to fraction form
    3,671.54/5,510.95 = 2,858.70/x
  3. Step 3: Cross multiply
    3,671.54x = 5,510.95 × 2,858.70
  4. Step 4: Simplify right side
    3,671.54x = 15,754,152.77
  5. Step 5: Solve for x
    x = 15,754,152.77/3,671.54
  6. Step 6: Final answer
    x = 4,290.89

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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.