Home / 1,262.48-1,742.19-1,225.22

Finding the Fourth Proportional to 1,262.48, 1,742.19 and 1,225.22

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Solution

The fourth proportional to 1,262.48, 1,742.19 and 1,225.22 is: 1,690.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,262.48 : 1,742.19 = 1,225.22 : x
  2. Step 2: Convert to fraction form
    1,262.48/1,742.19 = 1,225.22/x
  3. Step 3: Cross multiply
    1,262.48x = 1,742.19 × 1,225.22
  4. Step 4: Simplify right side
    1,262.48x = 2,134,566.03
  5. Step 5: Solve for x
    x = 2,134,566.03/1,262.48
  6. Step 6: Final answer
    x = 1,690.77

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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.