Home / 1,631.40-2,447.10-1,412.70

Finding the Fourth Proportional to 1,631.40, 2,447.10 and 1,412.70

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Solution

The fourth proportional to 1,631.40, 2,447.10 and 1,412.70 is: 2,119.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,631.40 : 2,447.10 = 1,412.70 : x
  2. Step 2: Convert to fraction form
    1,631.40/2,447.10 = 1,412.70/x
  3. Step 3: Cross multiply
    1,631.40x = 2,447.10 × 1,412.70
  4. Step 4: Simplify right side
    1,631.40x = 3,457,018.17
  5. Step 5: Solve for x
    x = 3,457,018.17/1,631.40
  6. Step 6: Final answer
    x = 2,119.05

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Similar ratio
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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.