Home / 3,530.40-5,294.16-1,221.36

Finding the Fourth Proportional to 3,530.40, 5,294.16 and 1,221.36

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Solution

The fourth proportional to 3,530.40, 5,294.16 and 1,221.36 is: 1,831.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,530.40 : 5,294.16 = 1,221.36 : x
  2. Step 2: Convert to fraction form
    3,530.40/5,294.16 = 1,221.36/x
  3. Step 3: Cross multiply
    3,530.40x = 5,294.16 × 1,221.36
  4. Step 4: Simplify right side
    3,530.40x = 6,466,075.26
  5. Step 5: Solve for x
    x = 6,466,075.26/3,530.40
  6. Step 6: Final answer
    x = 1,831.54

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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.