Home / 1,615.47-2,421.03-1,330.35

Finding the Fourth Proportional to 1,615.47, 2,421.03 and 1,330.35

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Solution

The fourth proportional to 1,615.47, 2,421.03 and 1,330.35 is: 1,993.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,615.47 : 2,421.03 = 1,330.35 : x
  2. Step 2: Convert to fraction form
    1,615.47/2,421.03 = 1,330.35/x
  3. Step 3: Cross multiply
    1,615.47x = 2,421.03 × 1,330.35
  4. Step 4: Simplify right side
    1,615.47x = 3,220,817.26
  5. Step 5: Solve for x
    x = 3,220,817.26/1,615.47
  6. Step 6: Final answer
    x = 1,993.73

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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.