Home / 3,615.30-5,423.55-1,275.21

Finding the Fourth Proportional to 3,615.30, 5,423.55 and 1,275.21

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Solution

The fourth proportional to 3,615.30, 5,423.55 and 1,275.21 is: 1,913.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,615.30 : 5,423.55 = 1,275.21 : x
  2. Step 2: Convert to fraction form
    3,615.30/5,423.55 = 1,275.21/x
  3. Step 3: Cross multiply
    3,615.30x = 5,423.55 × 1,275.21
  4. Step 4: Simplify right side
    3,615.30x = 6,916,165.20
  5. Step 5: Solve for x
    x = 6,916,165.20/3,615.30
  6. Step 6: Final answer
    x = 1,913.03

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1.5x scale

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.