Home / 1,997.64-2,756.70-1,368.15

Finding the Fourth Proportional to 1,997.64, 2,756.70 and 1,368.15

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Solution

The fourth proportional to 1,997.64, 2,756.70 and 1,368.15 is: 1,888.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,997.64 : 2,756.70 = 1,368.15 : x
  2. Step 2: Convert to fraction form
    1,997.64/2,756.70 = 1,368.15/x
  3. Step 3: Cross multiply
    1,997.64x = 2,756.70 × 1,368.15
  4. Step 4: Simplify right side
    1,997.64x = 3,771,579.11
  5. Step 5: Solve for x
    x = 3,771,579.11/1,997.64
  6. Step 6: Final answer
    x = 1,888.02

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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.