Home / 1,613.85-2,420.78-1,225.05

Finding the Fourth Proportional to 1,613.85, 2,420.78 and 1,225.05

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Solution

The fourth proportional to 1,613.85, 2,420.78 and 1,225.05 is: 1,837.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,613.85 : 2,420.78 = 1,225.05 : x
  2. Step 2: Convert to fraction form
    1,613.85/2,420.78 = 1,225.05/x
  3. Step 3: Cross multiply
    1,613.85x = 2,420.78 × 1,225.05
  4. Step 4: Simplify right side
    1,613.85x = 2,965,570.41
  5. Step 5: Solve for x
    x = 2,965,570.41/1,613.85
  6. Step 6: Final answer
    x = 1,837.58

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Similar ratio
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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.