Home / 1,997.36-2,750.40-1,953.10

Finding the Fourth Proportional to 1,997.36, 2,750.40 and 1,953.10

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Solution

The fourth proportional to 1,997.36, 2,750.40 and 1,953.10 is: 2,689.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,997.36 : 2,750.40 = 1,953.10 : x
  2. Step 2: Convert to fraction form
    1,997.36/2,750.40 = 1,953.10/x
  3. Step 3: Cross multiply
    1,997.36x = 2,750.40 × 1,953.10
  4. Step 4: Simplify right side
    1,997.36x = 5,371,806.24
  5. Step 5: Solve for x
    x = 5,371,806.24/1,997.36
  6. Step 6: Final answer
    x = 2,689.46

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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.