Home / 1,522.50-2,289.21-1,218.14

Finding the Fourth Proportional to 1,522.50, 2,289.21 and 1,218.14

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Solution

The fourth proportional to 1,522.50, 2,289.21 and 1,218.14 is: 1,831.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,522.50 : 2,289.21 = 1,218.14 : x
  2. Step 2: Convert to fraction form
    1,522.50/2,289.21 = 1,218.14/x
  3. Step 3: Cross multiply
    1,522.50x = 2,289.21 × 1,218.14
  4. Step 4: Simplify right side
    1,522.50x = 2,788,577.69
  5. Step 5: Solve for x
    x = 2,788,577.69/1,522.50
  6. Step 6: Final answer
    x = 1,831.58

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Half scale
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Double scale
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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.