Home / 1,615.98-2,421.24-1,555.20

Finding the Fourth Proportional to 1,615.98, 2,421.24 and 1,555.20

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Solution

The fourth proportional to 1,615.98, 2,421.24 and 1,555.20 is: 2,330.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,615.98 : 2,421.24 = 1,555.20 : x
  2. Step 2: Convert to fraction form
    1,615.98/2,421.24 = 1,555.20/x
  3. Step 3: Cross multiply
    1,615.98x = 2,421.24 × 1,555.20
  4. Step 4: Simplify right side
    1,615.98x = 3,765,512.45
  5. Step 5: Solve for x
    x = 3,765,512.45/1,615.98
  6. Step 6: Final answer
    x = 2,330.17

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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.