Home / 3,615.79-5,423.49-1,275.91

Finding the Fourth Proportional to 3,615.79, 5,423.49 and 1,275.91

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Solution

The fourth proportional to 3,615.79, 5,423.49 and 1,275.91 is: 1,913.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,615.79 : 5,423.49 = 1,275.91 : x
  2. Step 2: Convert to fraction form
    3,615.79/5,423.49 = 1,275.91/x
  3. Step 3: Cross multiply
    3,615.79x = 5,423.49 × 1,275.91
  4. Step 4: Simplify right side
    3,615.79x = 6,919,885.13
  5. Step 5: Solve for x
    x = 6,919,885.13/3,615.79
  6. Step 6: Final answer
    x = 1,913.80

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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.