Home / 1,960.15-2,953.70-1,621.10

Finding the Fourth Proportional to 1,960.15, 2,953.70 and 1,621.10

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Solution

The fourth proportional to 1,960.15, 2,953.70 and 1,621.10 is: 2,442.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,960.15 : 2,953.70 = 1,621.10 : x
  2. Step 2: Convert to fraction form
    1,960.15/2,953.70 = 1,621.10/x
  3. Step 3: Cross multiply
    1,960.15x = 2,953.70 × 1,621.10
  4. Step 4: Simplify right side
    1,960.15x = 4,788,243.07
  5. Step 5: Solve for x
    x = 4,788,243.07/1,960.15
  6. Step 6: Final answer
    x = 2,442.80

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.