Home / 1,991.40-2,752.08-1,495.68

Finding the Fourth Proportional to 1,991.40, 2,752.08 and 1,495.68

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Solution

The fourth proportional to 1,991.40, 2,752.08 and 1,495.68 is: 2,067.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991.40 : 2,752.08 = 1,495.68 : x
  2. Step 2: Convert to fraction form
    1,991.40/2,752.08 = 1,495.68/x
  3. Step 3: Cross multiply
    1,991.40x = 2,752.08 × 1,495.68
  4. Step 4: Simplify right side
    1,991.40x = 4,116,231.01
  5. Step 5: Solve for x
    x = 4,116,231.01/1,991.40
  6. Step 6: Final answer
    x = 2,067.00

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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.