Home / 1,615.23-2,423.25-690.84

Finding the Fourth Proportional to 1,615.23, 2,423.25 and 690.84

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Solution

The fourth proportional to 1,615.23, 2,423.25 and 690.84 is: 1,036.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,615.23 : 2,423.25 = 690.84 : x
  2. Step 2: Convert to fraction form
    1,615.23/2,423.25 = 690.84/x
  3. Step 3: Cross multiply
    1,615.23x = 2,423.25 × 690.84
  4. Step 4: Simplify right side
    1,615.23x = 1,674,078.03
  5. Step 5: Solve for x
    x = 1,674,078.03/1,615.23
  6. Step 6: Final answer
    x = 1,036.43

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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.