Home / 5,613.52-8,420.16-1,396.72

Finding the Fourth Proportional to 5,613.52, 8,420.16 and 1,396.72

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Solution

The fourth proportional to 5,613.52, 8,420.16 and 1,396.72 is: 2,095.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,613.52 : 8,420.16 = 1,396.72 : x
  2. Step 2: Convert to fraction form
    5,613.52/8,420.16 = 1,396.72/x
  3. Step 3: Cross multiply
    5,613.52x = 8,420.16 × 1,396.72
  4. Step 4: Simplify right side
    5,613.52x = 11,760,605.88
  5. Step 5: Solve for x
    x = 11,760,605.88/5,613.52
  6. Step 6: Final answer
    x = 2,095.05

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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.