Home / 1,631.36-2,249.63-1,396.10

Finding the Fourth Proportional to 1,631.36, 2,249.63 and 1,396.10

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Solution

The fourth proportional to 1,631.36, 2,249.63 and 1,396.10 is: 1,925.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,631.36 : 2,249.63 = 1,396.10 : x
  2. Step 2: Convert to fraction form
    1,631.36/2,249.63 = 1,396.10/x
  3. Step 3: Cross multiply
    1,631.36x = 2,249.63 × 1,396.10
  4. Step 4: Simplify right side
    1,631.36x = 3,140,690.21
  5. Step 5: Solve for x
    x = 3,140,690.21/1,631.36
  6. Step 6: Final answer
    x = 1,925.19

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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.