Home / 1,262.03-1,742.58-1,137.20

Finding the Fourth Proportional to 1,262.03, 1,742.58 and 1,137.20

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Solution

The fourth proportional to 1,262.03, 1,742.58 and 1,137.20 is: 1,570.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,262.03 : 1,742.58 = 1,137.20 : x
  2. Step 2: Convert to fraction form
    1,262.03/1,742.58 = 1,137.20/x
  3. Step 3: Cross multiply
    1,262.03x = 1,742.58 × 1,137.20
  4. Step 4: Simplify right side
    1,262.03x = 1,981,653.26
  5. Step 5: Solve for x
    x = 1,981,653.26/1,262.03
  6. Step 6: Final answer
    x = 1,570.22

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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.