Home / 1,666.81-2,496.32-1,317.80

Finding the Fourth Proportional to 1,666.81, 2,496.32 and 1,317.80

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Solution

The fourth proportional to 1,666.81, 2,496.32 and 1,317.80 is: 1,973.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,666.81 : 2,496.32 = 1,317.80 : x
  2. Step 2: Convert to fraction form
    1,666.81/2,496.32 = 1,317.80/x
  3. Step 3: Cross multiply
    1,666.81x = 2,496.32 × 1,317.80
  4. Step 4: Simplify right side
    1,666.81x = 3,289,631.43
  5. Step 5: Solve for x
    x = 3,289,631.43/1,666.81
  6. Step 6: Final answer
    x = 1,973.62

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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.