Home / 5,120.73-7,681.02-1,657.98

Finding the Fourth Proportional to 5,120.73, 7,681.02 and 1,657.98

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Solution

The fourth proportional to 5,120.73, 7,681.02 and 1,657.98 is: 2,486.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,120.73 : 7,681.02 = 1,657.98 : x
  2. Step 2: Convert to fraction form
    5,120.73/7,681.02 = 1,657.98/x
  3. Step 3: Cross multiply
    5,120.73x = 7,681.02 × 1,657.98
  4. Step 4: Simplify right side
    5,120.73x = 12,734,977.54
  5. Step 5: Solve for x
    x = 12,734,977.54/5,120.73
  6. Step 6: Final answer
    x = 2,486.95

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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.